vaapi: mpeg2: fix slice_vertical_position calculation.
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
2912e87a 5 * This file is part of Libav.
b78e7197 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
1617ad97
FB
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
1617ad97 11 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
1617ad97
FB
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
2912e87a 18 * License along with Libav; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
1617ad97 20 */
245976da 21
f9337897 22#include "libavutil/base64.h"
245976da 23#include "libavutil/avstring.h"
6a5d31ac 24#include "libavutil/intreadwrite.h"
0ebcdf5c 25#include "libavutil/mathematics.h"
9fcae973 26#include "libavutil/parseutils.h"
f5d33f52 27#include "libavutil/random_seed.h"
d2d67e42 28#include "libavutil/dict.h"
d450cc4f 29#include "libavutil/opt.h"
1617ad97 30#include "avformat.h"
e731b8d8 31#include "avio_internal.h"
1617ad97 32
db0ed93e 33#include <sys/time.h>
a8475bbd
LB
34#if HAVE_POLL_H
35#include <poll.h>
6ad1c9c9 36#endif
e4a9e3cc 37#include "internal.h"
42572ef5 38#include "network.h"
cbfa66d0 39#include "os_support.h"
f5d33f52 40#include "http.h"
c971ff19 41#include "rtsp.h"
1617ad97 42
302879cb 43#include "rtpdec.h"
e9dea59f 44#include "rdt.h"
965a3ddb 45#include "rtpdec_formats.h"
a493f80a 46#include "rtpenc_chain.h"
5652bb94 47#include "url.h"
17fff881 48#include "rtpenc.h"
4934884a 49
1617ad97
FB
50//#define DEBUG
51
a8475bbd 52/* Timeout values for socket poll, in ms,
9cba6f5f 53 * and read_packet(), in seconds */
a8475bbd 54#define POLL_TIMEOUT_MS 100
9cba6f5f 55#define READ_PACKET_TIMEOUT_S 10
a8475bbd 56#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS
91af5601 57#define SDP_MAX_SIZE 16384
96a7c975 58#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH
ccfa8aa2 59#define DEFAULT_REORDERING_DELAY 100000
9cba6f5f 60
2c9aa024
MS
61#define OFFSET(x) offsetof(RTSPState, x)
62#define DEC AV_OPT_FLAG_DECODING_PARAM
eca4850c 63#define ENC AV_OPT_FLAG_ENCODING_PARAM
3a6765fb
MS
64
65#define RTSP_FLAG_OPTS(name, longname) \
66 { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
67 { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" }
68
f011fcd6
JB
69#define RTSP_MEDIATYPE_OPTS(name, longname) \
70 { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \
71 { "video", "Video", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \
72 { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \
73 { "data", "Data", 0, AV_OPT_TYPE_CONST, {1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" }
74
17fff881 75const AVOption ff_rtsp_options[] = {
2c9aa024 76 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {0}, 0, 1, DEC },
c2ff63e3 77 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags)
eca4850c
MS
78 { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \
79 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
80 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
81 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
82 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {(1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
3a6765fb 83 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
f011fcd6 84 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
dbb06b8c
MS
85 { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
86 { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
17fff881
MS
87 { NULL },
88};
89
51369f28
MS
90static const AVOption sdp_options[] = {
91 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
f011fcd6 92 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
51369f28
MS
93 { NULL },
94};
95
96static const AVOption rtp_options[] = {
97 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
98 { NULL },
99};
100
1ef36a70
RB
101static void get_word_until_chars(char *buf, int buf_size,
102 const char *sep, const char **pp)
1617ad97
FB
103{
104 const char *p;
105 char *q;
106
107 p = *pp;
30619e6e 108 p += strspn(p, SPACE_CHARS);
1617ad97
FB
109 q = buf;
110 while (!strchr(sep, *p) && *p != '\0') {
111 if ((q - buf) < buf_size - 1)
112 *q++ = *p;
113 p++;
114 }
115 if (buf_size > 0)
116 *q = '\0';
117 *pp = p;
118}
119
1ef36a70
RB
120static void get_word_sep(char *buf, int buf_size, const char *sep,
121 const char **pp)
1617ad97 122{
1ef36a70
RB
123 if (**pp == '/') (*pp)++;
124 get_word_until_chars(buf, buf_size, sep, pp);
125}
1617ad97 126
1ef36a70
RB
127static void get_word(char *buf, int buf_size, const char **pp)
128{
129 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
130}
131
8bf0f969
MS
132/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
133 * and end time.
134 * Used for seeking in the rtp stream.
135 */
136static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
137{
138 char buf[256];
139
140 p += strspn(p, SPACE_CHARS);
141 if (!av_stristart(p, "npt=", &p))
142 return;
143
144 *start = AV_NOPTS_VALUE;
145 *end = AV_NOPTS_VALUE;
146
147 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 148 av_parse_time(start, buf, 1);
8bf0f969
MS
149 if (*p == '-') {
150 p++;
151 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 152 av_parse_time(end, buf, 1);
8bf0f969
MS
153 }
154// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
155// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
156}
157
158static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
159{
a92be9b8 160 struct addrinfo hints = { 0 }, *ai = NULL;
8bf0f969
MS
161 hints.ai_flags = AI_NUMERICHOST;
162 if (getaddrinfo(buf, NULL, &hints, &ai))
163 return -1;
164 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
165 freeaddrinfo(ai);
166 return 0;
167}
168
44b70ce5 169#if CONFIG_RTPDEC
003eb642
MS
170static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
171 RTSPStream *rtsp_st, AVCodecContext *codec)
172{
173 if (!handler)
174 return;
175 codec->codec_id = handler->codec_id;
176 rtsp_st->dynamic_handler = handler;
4b3dc857 177 if (handler->alloc) {
9261e6cf 178 rtsp_st->dynamic_protocol_context = handler->alloc();
4b3dc857
MS
179 if (!rtsp_st->dynamic_protocol_context)
180 rtsp_st->dynamic_handler = NULL;
181 }
003eb642
MS
182}
183
c8965800 184/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 185static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 186 AVStream *st, RTSPStream *rtsp_st,
c8965800 187 int payload_type, const char *p)
93ced3e8 188{
86b6e387 189 AVCodecContext *codec = st->codec;
93ced3e8 190 char buf[256];
d1ccf0e0
RD
191 int i;
192 AVCodec *c;
7b49ce2e 193 const char *c_name;
93ced3e8 194
d1ccf0e0 195 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
9d50d396
RB
196 * see if we can handle this kind of payload.
197 * The space should normally not be there but some Real streams or
198 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
199 * have a trailing space. */
200 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 201 if (payload_type >= RTP_PT_PRIVATE) {
003eb642
MS
202 RTPDynamicProtocolHandler *handler =
203 ff_rtp_handler_find_by_name(buf, codec->codec_type);
204 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
205 /* If no dynamic handler was found, check with the list of standard
206 * allocated types, if such a stream for some reason happens to
207 * use a private payload type. This isn't handled in rtpdec.c, since
208 * the format name from the rtpmap line never is passed into rtpdec. */
209 if (!rtsp_st->dynamic_handler)
210 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
93ced3e8 211 } else {
c8965800
RB
212 /* We are in a standard case
213 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 214 /* search into AVRtpPayloadTypes[] */
7ed19d7f 215 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
216 }
217
218 c = avcodec_find_decoder(codec->codec_id);
219 if (c && c->name)
7b49ce2e 220 c_name = c->name;
d1ccf0e0 221 else
170870b7 222 c_name = "(null)";
d1ccf0e0 223
7515ed0c
RB
224 get_word_sep(buf, sizeof(buf), "/", &p);
225 i = atoi(buf);
226 switch (codec->codec_type) {
72415b2a 227 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
228 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
229 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
230 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
231 if (i > 0) {
232 codec->sample_rate = i;
c3f9ebf7 233 avpriv_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
234 get_word_sep(buf, sizeof(buf), "/", &p);
235 i = atoi(buf);
236 if (i > 0)
237 codec->channels = i;
238 // TODO: there is a bug here; if it is a mono stream, and
239 // less than 22000Hz, faad upconverts to stereo and twice
240 // the frequency. No problem, but the sample rate is being
241 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 242 }
7515ed0c
RB
243 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
244 codec->sample_rate);
245 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
246 codec->channels);
247 break;
72415b2a 248 case AVMEDIA_TYPE_VIDEO:
7515ed0c 249 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387 250 if (i > 0)
c3f9ebf7 251 avpriv_set_pts_info(st, 32, 1, i);
7515ed0c
RB
252 break;
253 default:
254 break;
255 }
25836606
MS
256 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init)
257 rtsp_st->dynamic_handler->init(s, st->index,
258 rtsp_st->dynamic_protocol_context);
7515ed0c 259 return 0;
93ced3e8
FB
260}
261
c2bfd816 262/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
263 * is broken out as a function because it is used in rtp_h264.c, which is
264 * forthcoming. */
3307e6ea 265int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 266 char *value, int value_size)
d0deedcb 267{
30619e6e 268 *p += strspn(*p, SPACE_CHARS);
c8965800 269 if (**p) {
d0deedcb
RM
270 get_word_sep(attr, attr_size, "=", p);
271 if (**p == '=')
272 (*p)++;
273 get_word_sep(value, value_size, ";", p);
274 if (**p == ';')
275 (*p)++;
276 return 1;
277 }
278 return 0;
279}
280
93ced3e8
FB
281typedef struct SDPParseState {
282 /* SDP only */
3fbd12d1 283 struct sockaddr_storage default_ip;
c8965800
RB
284 int default_ttl;
285 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
286} SDPParseState;
287
288static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
289 int letter, const char *buf)
290{
8b1ab7bf 291 RTSPState *rt = s->priv_data;
1617ad97
FB
292 char buf1[64], st_type[64];
293 const char *p;
72415b2a 294 enum AVMediaType codec_type;
fb65d2ca 295 int payload_type, i;
1617ad97
FB
296 AVStream *st;
297 RTSPStream *rtsp_st;
3fbd12d1 298 struct sockaddr_storage sdp_ip;
93ced3e8
FB
299 int ttl;
300
dfd2a005 301 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
302
303 p = buf;
cb760a47
RB
304 if (s1->skip_media && letter != 'm')
305 return;
c8965800 306 switch (letter) {
93ced3e8
FB
307 case 'c':
308 get_word(buf1, sizeof(buf1), &p);
309 if (strcmp(buf1, "IN") != 0)
310 return;
311 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 312 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
313 return;
314 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 315 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
316 return;
317 ttl = 16;
318 if (*p == '/') {
319 p++;
320 get_word_sep(buf1, sizeof(buf1), "/", &p);
321 ttl = atoi(buf1);
322 }
323 if (s->nb_streams == 0) {
324 s1->default_ip = sdp_ip;
325 s1->default_ttl = ttl;
326 } else {
d9c0510e 327 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
328 rtsp_st->sdp_ip = sdp_ip;
329 rtsp_st->sdp_ttl = ttl;
330 }
331 break;
1617ad97 332 case 's':
d2d67e42 333 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
334 break;
335 case 'i':
336 if (s->nb_streams == 0) {
d2d67e42 337 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
338 break;
339 }
340 break;
341 case 'm':
342 /* new stream */
cb760a47 343 s1->skip_media = 0;
f011fcd6 344 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
345 get_word(st_type, sizeof(st_type), &p);
346 if (!strcmp(st_type, "audio")) {
72415b2a 347 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 348 } else if (!strcmp(st_type, "video")) {
72415b2a 349 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 350 } else if (!strcmp(st_type, "application")) {
72415b2a 351 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
352 }
353 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 354 s1->skip_media = 1;
1617ad97
FB
355 return;
356 }
1617ad97
FB
357 rtsp_st = av_mallocz(sizeof(RTSPStream));
358 if (!rtsp_st)
359 return;
8b1ab7bf
FB
360 rtsp_st->stream_index = -1;
361 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
362
363 rtsp_st->sdp_ip = s1->default_ip;
364 rtsp_st->sdp_ttl = s1->default_ttl;
365
93ced3e8
FB
366 get_word(buf1, sizeof(buf1), &p); /* port */
367 rtsp_st->sdp_port = atoi(buf1);
368
369 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 370
93ced3e8
FB
371 /* XXX: handle list of formats */
372 get_word(buf1, sizeof(buf1), &p); /* format list */
373 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 374
7ed19d7f 375 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf 376 /* no corresponding stream */
45600148
MS
377 } else if (rt->server_type == RTSP_SERVER_WMS &&
378 codec_type == AVMEDIA_TYPE_DATA) {
379 /* RTX stream, a stream that carries all the other actual
380 * audio/video streams. Don't expose this to the callers. */
8b1ab7bf 381 } else {
84ad31ff 382 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
383 if (!st)
384 return;
84ad31ff 385 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 386 rtsp_st->stream_index = st->index;
01f4895c 387 st->codec->codec_type = codec_type;
d1ccf0e0 388 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 389 RTPDynamicProtocolHandler *handler;
8b1ab7bf 390 /* if standard payload type, we can find the codec right now */
bf6d9818 391 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
392 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
393 st->codec->sample_rate > 0)
c3f9ebf7 394 avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
395 /* Even static payload types may need a custom depacketizer */
396 handler = ff_rtp_handler_find_by_id(
397 rtsp_st->sdp_payload_type, st->codec->codec_type);
398 init_rtp_handler(handler, rtsp_st, st->codec);
25836606
MS
399 if (handler && handler->init)
400 handler->init(s, st->index,
401 rtsp_st->dynamic_protocol_context);
8b1ab7bf
FB
402 }
403 }
1617ad97 404 /* put a default control url */
00eb13e0 405 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 406 sizeof(rtsp_st->control_url));
1617ad97
FB
407 break;
408 case 'a':
00eb13e0
AS
409 if (av_strstart(p, "control:", &p)) {
410 if (s->nb_streams == 0) {
411 if (!strncmp(p, "rtsp://", 7))
412 av_strlcpy(rt->control_uri, p,
413 sizeof(rt->control_uri));
414 } else {
0b6a7ff4
MS
415 char proto[32];
416 /* get the control url */
d9c0510e 417 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 418
0b6a7ff4
MS
419 /* XXX: may need to add full url resolution */
420 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
421 NULL, NULL, 0, p);
422 if (proto[0] == '\0') {
423 /* relative control URL */
424 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
425 av_strlcat(rtsp_st->control_url, "/",
426 sizeof(rtsp_st->control_url));
427 av_strlcat(rtsp_st->control_url, p,
428 sizeof(rtsp_st->control_url));
429 } else
430 av_strlcpy(rtsp_st->control_url, p,
431 sizeof(rtsp_st->control_url));
00eb13e0 432 }
83d14c85 433 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 434 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 435 get_word(buf1, sizeof(buf1), &p);
93ced3e8 436 payload_type = atoi(buf1);
d9c0510e 437 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
45600148
MS
438 if (rtsp_st->stream_index >= 0) {
439 st = s->streams[rtsp_st->stream_index];
440 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
441 }
7fc8ac7f
JA
442 } else if (av_strstart(p, "fmtp:", &p) ||
443 av_strstart(p, "framesize:", &p)) {
93ced3e8 444 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
445 // let dynamic protocol handlers have a stab at the line.
446 get_word(buf1, sizeof(buf1), &p);
447 payload_type = atoi(buf1);
d9c0510e
MS
448 for (i = 0; i < rt->nb_rtsp_streams; i++) {
449 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
450 if (rtsp_st->sdp_payload_type == payload_type &&
451 rtsp_st->dynamic_handler &&
452 rtsp_st->dynamic_handler->parse_sdp_a_line)
453 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
454 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 455 }
c8965800 456 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
457 int64_t start, end;
458
459 // this is so that seeking on a streamed file can work.
460 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
461 s->start_time = start;
462 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
463 s->duration = (end == AV_NOPTS_VALUE) ?
464 AV_NOPTS_VALUE : end - start;
119b4668
RB
465 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
466 if (atoi(p) == 1)
467 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
468 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
469 s->nb_streams > 0) {
470 st = s->streams[s->nb_streams - 1];
471 st->codec->sample_rate = atoi(p);
1a30d541
RB
472 } else {
473 if (rt->server_type == RTSP_SERVER_WMS)
474 ff_wms_parse_sdp_a_line(s, p);
475 if (s->nb_streams > 0) {
45600148
MS
476 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
477
c4a3d032 478 if (rt->server_type == RTSP_SERVER_REAL)
45600148 479 ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
c4a3d032 480
c4a3d032
RB
481 if (rtsp_st->dynamic_handler &&
482 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800 483 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
45600148 484 rtsp_st->stream_index,
c4a3d032 485 rtsp_st->dynamic_protocol_context, buf);
1a30d541 486 }
1617ad97
FB
487 }
488 break;
489 }
490}
491
0526c6f7 492int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 493{
a8475bbd 494 RTSPState *rt = s->priv_data;
1617ad97
FB
495 const char *p;
496 int letter;
9211bcdd
RB
497 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
498 * contain long SDP lines containing complete ASF Headers (several
499 * kB) or arrays of MDPR (RM stream descriptor) headers plus
500 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
501 * buffer is large.
502 *
afcea58c
JA
503 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
504 * in rtpdec_xiph.c. */
373afbaf 505 char buf[16384], *q;
a92be9b8 506 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
115329f1 507
1617ad97 508 p = content;
c8965800 509 for (;;) {
30619e6e 510 p += strspn(p, SPACE_CHARS);
1617ad97
FB
511 letter = *p;
512 if (letter == '\0')
513 break;
514 p++;
515 if (*p != '=')
516 goto next_line;
517 p++;
518 /* get the content */
519 q = buf;
b6892136 520 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
521 if ((q - buf) < sizeof(buf) - 1)
522 *q++ = *p;
523 p++;
524 }
525 *q = '\0';
93ced3e8 526 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
527 next_line:
528 while (*p != '\n' && *p != '\0')
529 p++;
530 if (*p == '\n')
531 p++;
532 }
a8475bbd
LB
533 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
534 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
535 return 0;
536}
44b70ce5 537#endif /* CONFIG_RTPDEC */
1617ad97 538
93e7490e
MS
539void ff_rtsp_undo_setup(AVFormatContext *s)
540{
541 RTSPState *rt = s->priv_data;
542 int i;
543
544 for (i = 0; i < rt->nb_rtsp_streams; i++) {
545 RTSPStream *rtsp_st = rt->rtsp_streams[i];
546 if (!rtsp_st)
547 continue;
548 if (rtsp_st->transport_priv) {
549 if (s->oformat) {
550 AVFormatContext *rtpctx = rtsp_st->transport_priv;
551 av_write_trailer(rtpctx);
552 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
553 uint8_t *ptr;
6dc7d80d 554 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
555 av_free(ptr);
556 } else {
22a3212e 557 avio_close(rtpctx->pb);
93e7490e 558 }
b22dbb29 559 avformat_free_context(rtpctx);
93e7490e
MS
560 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
561 ff_rdt_parse_close(rtsp_st->transport_priv);
562 else if (CONFIG_RTPDEC)
bfc6db44 563 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
564 }
565 rtsp_st->transport_priv = NULL;
566 if (rtsp_st->rtp_handle)
e52a9145 567 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
568 rtsp_st->rtp_handle = NULL;
569 }
570}
571
1ced9da3 572/* close and free RTSP streams */
3307e6ea 573void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 574{
52aa4338 575 RTSPState *rt = s->priv_data;
1ced9da3
LA
576 int i;
577 RTSPStream *rtsp_st;
578
93e7490e 579 ff_rtsp_undo_setup(s);
c8965800 580 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
581 rtsp_st = rt->rtsp_streams[i];
582 if (rtsp_st) {
1ced9da3 583 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 584 rtsp_st->dynamic_handler->free(
c8965800 585 rtsp_st->dynamic_protocol_context);
ea7f0807 586 av_free(rtsp_st);
1ced9da3
LA
587 }
588 }
589 av_free(rt->rtsp_streams);
590 if (rt->asf_ctx) {
cd3716b9 591 avformat_close_input(&rt->asf_ctx);
1ced9da3 592 }
a8475bbd 593 av_free(rt->p);
96a7c975 594 av_free(rt->recvbuf);
1ced9da3
LA
595}
596
c8965800 597static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
598{
599 RTSPState *rt = s->priv_data;
600 AVStream *st = NULL;
601
602 /* open the RTP context */
603 if (rtsp_st->stream_index >= 0)
604 st = s->streams[rtsp_st->stream_index];
605 if (!st)
606 s->ctx_flags |= AVFMTCTX_NOHEADER;
607
44b70ce5 608 if (s->oformat && CONFIG_RTSP_MUXER) {
a493f80a
MS
609 rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st,
610 rtsp_st->rtp_handle,
611 RTSP_TCP_MAX_PACKET_SIZE);
c2bfd816 612 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 613 rtsp_st->rtp_handle = NULL;
44b70ce5 614 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
615 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
616 rtsp_st->dynamic_protocol_context,
617 rtsp_st->dynamic_handler);
44b70ce5 618 else if (CONFIG_RTPDEC)
bfc6db44 619 rtsp_st->transport_priv = ff_rtp_parse_open(s, st, rtsp_st->rtp_handle,
58ee0991
MS
620 rtsp_st->sdp_payload_type,
621 (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
622 ? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
1ced9da3
LA
623
624 if (!rtsp_st->transport_priv) {
625 return AVERROR(ENOMEM);
44b70ce5 626 } else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
c8965800 627 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
628 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
629 rtsp_st->dynamic_protocol_context,
630 rtsp_st->dynamic_handler);
1ced9da3
LA
631 }
632 }
633
634 return 0;
635}
636
6f5a3d0a 637#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
638static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
639{
640 const char *p;
641 int v;
642
643 p = *pp;
30619e6e 644 p += strspn(p, SPACE_CHARS);
1617ad97
FB
645 v = strtol(p, (char **)&p, 10);
646 if (*p == '-') {
647 p++;
648 *min_ptr = v;
649 v = strtol(p, (char **)&p, 10);
650 *max_ptr = v;
651 } else {
652 *min_ptr = v;
653 *max_ptr = v;
654 }
655 *pp = p;
656}
657
658/* XXX: only one transport specification is parsed */
a9e534d5 659static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
660{
661 char transport_protocol[16];
662 char profile[16];
663 char lower_transport[16];
664 char parameter[16];
665 RTSPTransportField *th;
666 char buf[256];
115329f1 667
1617ad97 668 reply->nb_transports = 0;
115329f1 669
c8965800 670 for (;;) {
30619e6e 671 p += strspn(p, SPACE_CHARS);
1617ad97
FB
672 if (*p == '\0')
673 break;
674
675 th = &reply->transports[reply->nb_transports];
676
115329f1 677 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 678 "/", &p);
bb3244de 679 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
680 get_word_sep(profile, sizeof(profile), "/;,", &p);
681 lower_transport[0] = '\0';
682 /* rtp/avp/<protocol> */
683 if (*p == '/') {
7ecc634e
LB
684 get_word_sep(lower_transport, sizeof(lower_transport),
685 ";,", &p);
119b4668
RB
686 }
687 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
688 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
689 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 690 /* x-pn-tng/<protocol> */
e1502118
LB
691 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
692 profile[0] = '\0';
119b4668 693 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 694 }
bb3244de 695 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 696 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 697 else
90abbdba 698 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 699
1617ad97
FB
700 if (*p == ';')
701 p++;
702 /* get each parameter */
703 while (*p != '\0' && *p != ',') {
704 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
705 if (!strcmp(parameter, "port")) {
706 if (*p == '=') {
707 p++;
708 rtsp_parse_range(&th->port_min, &th->port_max, &p);
709 }
710 } else if (!strcmp(parameter, "client_port")) {
711 if (*p == '=') {
712 p++;
115329f1 713 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
714 &th->client_port_max, &p);
715 }
716 } else if (!strcmp(parameter, "server_port")) {
717 if (*p == '=') {
718 p++;
115329f1 719 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
720 &th->server_port_max, &p);
721 }
722 } else if (!strcmp(parameter, "interleaved")) {
723 if (*p == '=') {
724 p++;
115329f1 725 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
726 &th->interleaved_max, &p);
727 }
728 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
729 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
730 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
731 } else if (!strcmp(parameter, "ttl")) {
732 if (*p == '=') {
733 p++;
734 th->ttl = strtol(p, (char **)&p, 10);
735 }
736 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
737 if (*p == '=') {
738 p++;
739 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 740 get_sockaddr(buf, &th->destination);
1617ad97 741 }
619298a8
JW
742 } else if (!strcmp(parameter, "source")) {
743 if (*p == '=') {
744 p++;
745 get_word_sep(buf, sizeof(buf), ";,", &p);
746 av_strlcpy(th->source, buf, sizeof(th->source));
747 }
1617ad97 748 }
619298a8 749
1617ad97
FB
750 while (*p != ';' && *p != '\0' && *p != ',')
751 p++;
752 if (*p == ';')
753 p++;
754 }
755 if (*p == ',')
756 p++;
757
758 reply->nb_transports++;
759 }
760}
761
29db7c3a
MS
762static void handle_rtp_info(RTSPState *rt, const char *url,
763 uint32_t seq, uint32_t rtptime)
764{
765 int i;
766 if (!rtptime || !url[0])
767 return;
768 if (rt->transport != RTSP_TRANSPORT_RTP)
769 return;
770 for (i = 0; i < rt->nb_rtsp_streams; i++) {
771 RTSPStream *rtsp_st = rt->rtsp_streams[i];
772 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
773 if (!rtpctx)
774 continue;
775 if (!strcmp(rtsp_st->control_url, url)) {
776 rtpctx->base_timestamp = rtptime;
777 break;
778 }
779 }
780}
781
782static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
783{
784 int read = 0;
785 char key[20], value[1024], url[1024] = "";
786 uint32_t seq = 0, rtptime = 0;
787
788 for (;;) {
789 p += strspn(p, SPACE_CHARS);
790 if (!*p)
791 break;
792 get_word_sep(key, sizeof(key), "=", &p);
793 if (*p != '=')
794 break;
795 p++;
796 get_word_sep(value, sizeof(value), ";, ", &p);
797 read++;
798 if (!strcmp(key, "url"))
799 av_strlcpy(url, value, sizeof(url));
800 else if (!strcmp(key, "seq"))
4515f9b5 801 seq = strtoul(value, NULL, 10);
29db7c3a 802 else if (!strcmp(key, "rtptime"))
4515f9b5 803 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
804 if (*p == ',') {
805 handle_rtp_info(rt, url, seq, rtptime);
806 url[0] = '\0';
807 seq = rtptime = 0;
808 read = 0;
809 }
810 if (*p)
811 p++;
812 }
813 if (read > 0)
814 handle_rtp_info(rt, url, seq, rtptime);
815}
816
2626308a 817void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 818 RTSPState *rt, const char *method)
1617ad97
FB
819{
820 const char *p;
821
822 /* NOTE: we do case independent match for broken servers */
823 p = buf;
f7d78f36 824 if (av_stristart(p, "Session:", &p)) {
30e79845 825 int t;
1617ad97 826 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
827 if (av_stristart(p, ";timeout=", &p) &&
828 (t = strtol(p, NULL, 10)) > 0) {
829 reply->timeout = t;
830 }
f7d78f36 831 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 832 reply->content_length = strtol(p, NULL, 10);
f7d78f36 833 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 834 rtsp_parse_transport(reply, p);
f7d78f36 835 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 836 reply->seq = strtol(p, NULL, 10);
f7d78f36 837 } else if (av_stristart(p, "Range:", &p)) {
31693e00 838 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 839 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 840 p += strspn(p, SPACE_CHARS);
30aa6aed 841 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 842 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 843 p += strspn(p, SPACE_CHARS);
7a86bafa 844 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
845 } else if (av_stristart(p, "Notice:", &p) ||
846 av_stristart(p, "X-Notice:", &p)) {
847 reply->notice = strtol(p, NULL, 10);
d243ba30 848 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 849 p += strspn(p, SPACE_CHARS);
d243ba30 850 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 851 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 852 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
853 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
854 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 855 p += strspn(p, SPACE_CHARS);
acc9ed14 856 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 857 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 858 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
859 if (method && !strcmp(method, "DESCRIBE"))
860 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
861 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
862 p += strspn(p, SPACE_CHARS);
863 if (method && !strcmp(method, "PLAY"))
864 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
865 } else if (av_stristart(p, "Public:", &p) && rt) {
866 if (strstr(p, "GET_PARAMETER") &&
867 method && !strcmp(method, "OPTIONS"))
868 rt->get_parameter_supported = 1;
30eae325
MS
869 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
870 p += strspn(p, SPACE_CHARS);
871 rt->accept_dynamic_rate = atoi(p);
1617ad97
FB
872 }
873}
874
b7b8fc34 875/* skip a RTP/TCP interleaved packet */
ec55edba 876void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
877{
878 RTSPState *rt = s->priv_data;
879 int ret, len, len1;
880 uint8_t buf[1024];
881
dce37564 882 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
883 if (ret != 3)
884 return;
80fb8234 885 len = AV_RB16(buf + 1);
67c9cd69 886
dfd2a005 887 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 888
b7b8fc34
FB
889 /* skip payload */
890 while (len > 0) {
891 len1 = len;
892 if (len1 > sizeof(buf))
893 len1 = sizeof(buf);
dce37564 894 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
895 if (ret != len1)
896 return;
897 len -= len1;
898 }
899}
1617ad97 900
3307e6ea 901int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 902 unsigned char **content_ptr,
3df54c6b 903 int return_on_interleaved_data, const char *method)
1617ad97
FB
904{
905 RTSPState *rt = s->priv_data;
906 char buf[4096], buf1[1024], *q;
907 unsigned char ch;
908 const char *p;
1a6b9a98 909 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
910 unsigned char *content = NULL;
911
1a6b9a98
TW
912start:
913 line_count = 0;
914 request = 0;
915 content = NULL;
d541a7d2 916 memset(reply, 0, sizeof(*reply));
1617ad97 917
1617ad97 918 /* parse reply (XXX: use buffers) */
1617ad97 919 rt->last_reply[0] = '\0';
c8965800 920 for (;;) {
1617ad97 921 q = buf;
c8965800 922 for (;;) {
dce37564 923 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 924 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 925 if (ret != 1)
2401660d 926 return AVERROR_EOF;
1617ad97
FB
927 if (ch == '\n')
928 break;
b7b8fc34
FB
929 if (ch == '$') {
930 /* XXX: only parse it if first char on line ? */
7e726132
RB
931 if (return_on_interleaved_data) {
932 return 1;
933 } else
ec55edba 934 ff_rtsp_skip_packet(s);
b7b8fc34 935 } else if (ch != '\r') {
1617ad97
FB
936 if ((q - buf) < sizeof(buf) - 1)
937 *q++ = ch;
938 }
939 }
940 *q = '\0';
67c9cd69 941
dfd2a005 942 av_dlog(s, "line='%s'\n", buf);
67c9cd69 943
1617ad97
FB
944 /* test if last line */
945 if (buf[0] == '\0')
946 break;
947 p = buf;
948 if (line_count == 0) {
949 /* get reply code */
950 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
951 if (!strncmp(buf1, "RTSP/", 5)) {
952 get_word(buf1, sizeof(buf1), &p);
953 reply->status_code = atoi(buf1);
954 av_strlcpy(reply->reason, p, sizeof(reply->reason));
955 } else {
956 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
957 get_word(buf1, sizeof(buf1), &p); // object
958 request = 1;
959 }
1617ad97 960 } else {
77223c53 961 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
962 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
963 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
964 }
965 line_count++;
966 }
115329f1 967
1a6b9a98 968 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 969 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 970
1617ad97
FB
971 content_length = reply->content_length;
972 if (content_length > 0) {
973 /* leave some room for a trailing '\0' (useful for simple parsing) */
974 content = av_malloc(content_length + 1);
dce37564 975 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
976 content[content_length] = '\0';
977 }
978 if (content_ptr)
979 *content_ptr = content;
e2e2e7dd
AB
980 else
981 av_free(content);
7e726132 982
1a6b9a98
TW
983 if (request) {
984 char buf[1024];
985 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
986 const char* ptr = buf;
987
988 if (!strcmp(reply->reason, "OPTIONS")) {
989 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
990 if (reply->seq)
991 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
992 if (reply->session_id[0])
993 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
994 reply->session_id);
995 } else {
996 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
997 }
998 av_strlcat(buf, "\r\n", sizeof(buf));
999
1000 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1001 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1002 ptr = base64buf;
1003 }
1004 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1005
1006 rt->last_cmd_time = av_gettime();
1007 /* Even if the request from the server had data, it is not the data
1008 * that the caller wants or expects. The memory could also be leaked
1009 * if the actual following reply has content data. */
1010 if (content_ptr)
1011 av_freep(content_ptr);
1012 /* If method is set, this is called from ff_rtsp_send_cmd,
1013 * where a reply to exactly this request is awaited. For
705eeb5e 1014 * callers from within packet receiving, we just want to
1a6b9a98
TW
1015 * return to the caller and go back to receiving packets. */
1016 if (method)
1017 goto start;
1018 return 0;
1019 }
1020
7ed8211b
LB
1021 if (rt->seq != reply->seq) {
1022 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1023 rt->seq, reply->seq);
1024 }
1025
fccb1770
RB
1026 /* EOS */
1027 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1028 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1029 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1030 rt->state = RTSP_STATE_IDLE;
c8965800 1031 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1032 return AVERROR(EIO); /* data or server error */
c8965800 1033 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1034 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1035 return AVERROR(EPERM);
1036
7e726132 1037 return 0;
1617ad97
FB
1038}
1039
57c4d01e
DEP
1040/**
1041 * Send a command to the RTSP server without waiting for the reply.
1042 *
1043 * @param s RTSP (de)muxer context
1044 * @param method the method for the request
1045 * @param url the target url for the request
1046 * @param headers extra header lines to include in the request
1047 * @param send_content if non-null, the data to send as request body content
1048 * @param send_content_length the length of the send_content data, or 0 if
1049 * send_content is null
1050 *
1051 * @return zero if success, nonzero otherwise
1052 */
1053static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1054 const char *method, const char *url,
1055 const char *headers,
1056 const unsigned char *send_content,
1057 int send_content_length)
29b9f58b
RB
1058{
1059 RTSPState *rt = s->priv_data;
f5d33f52
JA
1060 char buf[4096], *out_buf;
1061 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1062
f5d33f52
JA
1063 /* Add in RTSP headers */
1064 out_buf = buf;
29b9f58b 1065 rt->seq++;
b17d11c6
MS
1066 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1067 if (headers)
1068 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1069 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1070 if (rt->session_id[0] != '\0' && (!headers ||
1071 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1072 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1073 }
aa8bf2fb
MS
1074 if (rt->auth[0]) {
1075 char *str = ff_http_auth_create_response(&rt->auth_state,
1076 rt->auth, url, method);
1077 if (str)
1078 av_strlcat(buf, str, sizeof(buf));
1079 av_free(str);
1080 }
dfd017bf
MS
1081 if (send_content_length > 0 && send_content)
1082 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1083 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1084
f5d33f52
JA
1085 /* base64 encode rtsp if tunneling */
1086 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1087 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1088 out_buf = base64buf;
1089 }
1090
dfd2a005 1091 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1092
925e908b 1093 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1094 if (send_content_length > 0 && send_content) {
1095 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1096 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1097 "with content data not supported\n");
1098 return AVERROR_PATCHWELCOME;
1099 }
925e908b 1100 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1101 }
30e79845 1102 rt->last_cmd_time = av_gettime();
d0382374
JA
1103
1104 return 0;
30e79845
RB
1105}
1106
d0382374 1107int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1108 const char *url, const char *headers)
dfd017bf 1109{
d0382374 1110 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1111}
1112
d0382374 1113int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1114 const char *headers, RTSPMessageHeader *reply,
1115 unsigned char **content_ptr)
30e79845 1116{
d0382374 1117 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1118 content_ptr, NULL, 0);
29b9f58b
RB
1119}
1120
d0382374 1121int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1122 const char *method, const char *url,
1123 const char *header,
1124 RTSPMessageHeader *reply,
1125 unsigned char **content_ptr,
1126 const unsigned char *send_content,
1127 int send_content_length)
dfd017bf 1128{
30af0779
MS
1129 RTSPState *rt = s->priv_data;
1130 HTTPAuthType cur_auth_type;
2f96cc1f 1131 int ret, attempts = 0;
30af0779
MS
1132
1133retry:
1134 cur_auth_type = rt->auth_state.auth_type;
d0382374 1135 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1136 send_content,
1137 send_content_length)))
d0382374 1138 return ret;
dfd017bf 1139
3df54c6b 1140 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1141 return ret;
2f96cc1f 1142 attempts++;
30af0779 1143
2f96cc1f
MS
1144 if (reply->status_code == 401 &&
1145 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1146 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1147 goto retry;
d0382374 1148
bf55cf19 1149 if (reply->status_code > 400){
d93fdcbf 1150 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1151 method,
d93fdcbf
LB
1152 reply->status_code,
1153 reply->reason);
bf55cf19
LB
1154 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1155 }
1156
d0382374 1157 return 0;
dfd017bf
MS
1158}
1159
fef5649a 1160int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1161 int lower_transport, const char *real_challenge)
1617ad97
FB
1162{
1163 RTSPState *rt = s->priv_data;
58f09785 1164 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1165 RTSPStream *rtsp_st;
a9e534d5 1166 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1167 char cmd[2048];
e9dea59f
RB
1168 const char *trans_pref;
1169
119b4668 1170 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1171 trans_pref = "x-pn-tng";
1172 else
1173 trans_pref = "RTP/AVP";
115329f1 1174
30e79845
RB
1175 /* default timeout: 1 minute */
1176 rt->timeout = 60;
1177
1617ad97
FB
1178 /* for each stream, make the setup request */
1179 /* XXX: we assume the same server is used for the control of each
c8965800 1180 * RTSP stream */
d1ccf0e0 1181
58f09785
DV
1182 /* Choose a random starting offset within the first half of the
1183 * port range, to allow for a number of ports to try even if the offset
1184 * happens to be at the end of the random range. */
1185 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1186 /* even random offset */
1187 port_off -= port_off & 0x01;
1188
1189 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1190 char transport[2048];
1191
f75e3da5 1192 /*
f830c9a4
RB
1193 * WMS serves all UDP data over a single connection, the RTX, which
1194 * isn't necessarily the first in the SDP but has to be the first
1195 * to be set up, else the second/third SETUP will fail with a 461.
1196 */
1197 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1198 rt->server_type == RTSP_SERVER_WMS) {
1199 if (i == 0) {
1200 /* rtx first */
1201 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1202 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1203 if (len >= 4 &&
c8965800
RB
1204 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1205 "/rtx"))
f830c9a4
RB
1206 break;
1207 }
1208 if (rtx == rt->nb_rtsp_streams)
1209 return -1; /* no RTX found */
1210 rtsp_st = rt->rtsp_streams[rtx];
1211 } else
1212 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1213 } else
2fea9650 1214 rtsp_st = rt->rtsp_streams[i];
1617ad97 1215
1617ad97 1216 /* RTP/UDP */
90abbdba 1217 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1218 char buf[256];
85fb7b34 1219
f830c9a4
RB
1220 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1221 port = reply->transports[0].client_port_min;
1222 goto have_port;
1223 }
1224
85fb7b34 1225 /* first try in specified port range */
dbb06b8c 1226 while (j <= rt->rtp_port_max) {
bc495bad
DV
1227 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1228 "?localport=%d", j);
1229 /* we will use two ports per rtp stream (rtp and rtcp) */
1230 j += 2;
1231 if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1232 &s->interrupt_callback, NULL))
1233 goto rtp_opened;
1617ad97 1234 }
85fb7b34 1235
a3b058b7
MS
1236 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1237 err = AVERROR(EIO);
1238 goto fail;
85fb7b34
FB
1239
1240 rtp_opened:
bfc6db44 1241 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1242 have_port:
0ad306bc 1243 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1244 "%s/UDP;", trans_pref);
1245 if (rt->server_type != RTSP_SERVER_REAL)
1246 av_strlcat(transport, "unicast;", sizeof(transport));
1247 av_strlcatf(transport, sizeof(transport),
1248 "client_port=%d", port);
f830c9a4
RB
1249 if (rt->transport == RTSP_TRANSPORT_RTP &&
1250 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1251 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1252 }
1253
1254 /* RTP/TCP */
90abbdba 1255 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1256 /* For WMS streams, the application streams are only used for
090438cc
RB
1257 * UDP. When trying to set it up for TCP streams, the server
1258 * will return an error. Therefore, we skip those streams. */
1259 if (rt->server_type == RTSP_SERVER_WMS &&
45600148
MS
1260 (rtsp_st->stream_index < 0 ||
1261 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1262 AVMEDIA_TYPE_DATA))
090438cc 1263 continue;
0ad306bc 1264 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1265 "%s/TCP;", trans_pref);
895678f8 1266 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1267 av_strlcat(transport, "unicast;", sizeof(transport));
1268 av_strlcatf(transport, sizeof(transport),
1269 "interleaved=%d-%d",
1270 interleave, interleave + 1);
1271 interleave += 2;
1617ad97
FB
1272 }
1273
90abbdba 1274 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1275 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1276 "%s/UDP;multicast", trans_pref);
1617ad97 1277 }
69adcc4f
MS
1278 if (s->oformat) {
1279 av_strlcat(transport, ";mode=receive", sizeof(transport));
1280 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1281 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1282 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1283 snprintf(cmd, sizeof(cmd),
b6892136 1284 "Transport: %s\r\n",
b17d11c6 1285 transport);
76b0d03d
MS
1286 if (rt->accept_dynamic_rate)
1287 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1288 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1289 char real_res[41], real_csum[9];
1290 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1291 real_challenge);
1292 av_strlcatf(cmd, sizeof(cmd),
1293 "If-Match: %s\r\n"
1294 "RealChallenge2: %s, sd=%s\r\n",
1295 rt->session_id, real_res, real_csum);
1296 }
b17d11c6 1297 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1298 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1299 err = 1;
1300 goto fail;
7e6ca34f
RB
1301 } else if (reply->status_code != RTSP_STATUS_OK ||
1302 reply->nb_transports != 1) {
1617ad97
FB
1303 err = AVERROR_INVALIDDATA;
1304 goto fail;
1305 }
1306
1307 /* XXX: same protocol for all streams is required */
1308 if (i > 0) {
119b4668
RB
1309 if (reply->transports[0].lower_transport != rt->lower_transport ||
1310 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1311 err = AVERROR_INVALIDDATA;
1312 goto fail;
1313 }
1314 } else {
90abbdba 1315 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1316 rt->transport = reply->transports[0].transport;
1617ad97
FB
1317 }
1318
8c579c1c
MS
1319 /* Fail if the server responded with another lower transport mode
1320 * than what we requested. */
1321 if (reply->transports[0].lower_transport != lower_transport) {
1322 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1323 err = AVERROR_INVALIDDATA;
1324 goto fail;
1617ad97
FB
1325 }
1326
90abbdba
RB
1327 switch(reply->transports[0].lower_transport) {
1328 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1329 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1330 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1331 break;
115329f1 1332
c8965800 1333 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1334 char url[1024], options[30] = "";
c8965800 1335
9867aea5 1336 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1337 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1338 /* Use source address if specified */
1339 if (reply->transports[0].source[0]) {
1340 ff_url_join(url, sizeof(url), "rtp", NULL,
1341 reply->transports[0].source,
d8407339 1342 reply->transports[0].server_port_min, "%s", options);
619298a8 1343 } else {
7bac991f 1344 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1345 reply->transports[0].server_port_min, "%s", options);
619298a8 1346 }
c8965800 1347 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1348 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1349 err = AVERROR_INVALIDDATA;
1350 goto fail;
1617ad97 1351 }
9c8fa20d
MS
1352 /* Try to initialize the connection state in a
1353 * potential NAT router by sending dummy packets.
1354 * RTP/RTCP dummy packets are used for RDT, too.
1355 */
44b70ce5
MS
1356 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1357 CONFIG_RTPDEC)
bfc6db44 1358 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1359 break;
c8965800
RB
1360 }
1361 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1362 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1363 struct sockaddr_storage addr;
c8965800
RB
1364 int port, ttl;
1365
7934b15d
MS
1366 if (reply->transports[0].destination.ss_family) {
1367 addr = reply->transports[0].destination;
c8965800
RB
1368 port = reply->transports[0].port_min;
1369 ttl = reply->transports[0].ttl;
1370 } else {
7934b15d 1371 addr = rtsp_st->sdp_ip;
c8965800
RB
1372 port = rtsp_st->sdp_port;
1373 ttl = rtsp_st->sdp_ttl;
1374 }
6294d708
MS
1375 if (ttl > 0)
1376 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1377 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1378 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1379 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1380 port, "%s", optbuf);
6f1b7b39 1381 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1382 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1383 err = AVERROR_INVALIDDATA;
1384 goto fail;
1617ad97
FB
1385 }
1386 break;
1387 }
c8965800 1388 }
d1ccf0e0 1389
ee0cb67f 1390 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1391 goto fail;
1617ad97
FB
1392 }
1393
30e79845
RB
1394 if (reply->timeout > 0)
1395 rt->timeout = reply->timeout;
1396
2e889ae4 1397 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1398 rt->need_subscription = 1;
1399
53620bba
RB
1400 return 0;
1401
1402fail:
aeb2de1c 1403 ff_rtsp_undo_setup(s);
53620bba
RB
1404 return err;
1405}
1406
b8c2c41d
JA
1407void ff_rtsp_close_connections(AVFormatContext *s)
1408{
1409 RTSPState *rt = s->priv_data;
e52a9145
AK
1410 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1411 ffurl_close(rt->rtsp_hd);
6217b645 1412 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1413}
1414
3307e6ea 1415int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1416{
1417 RTSPState *rt = s->priv_data;
921da217 1418 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
03f8fc08 1419 int port, err, tcp_fd;
354b7573 1420 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1421 int lower_transport_mask = 0;
2762a7a2 1422 char real_challenge[64] = "";
03f8fc08
MS
1423 struct sockaddr_storage peer;
1424 socklen_t peer_len = sizeof(peer);
57b5555c 1425
dbb06b8c
MS
1426 if (rt->rtp_port_max < rt->rtp_port_min) {
1427 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1428 "than min port %d\n", rt->rtp_port_max,
1429 rt->rtp_port_min);
1430 return AVERROR(EINVAL);
1431 }
1432
57b5555c
MS
1433 if (!ff_network_init())
1434 return AVERROR(EIO);
eca4850c 1435
4fa57d52 1436 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1437 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
4fa57d52 1438
f5d33f52 1439 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1440 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1441 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1442 rt->control_transport = RTSP_MODE_TUNNEL;
1443 }
1444 /* Only pass through valid flags from here */
1445 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1446
1447redirect:
1448 lower_transport_mask = rt->lower_transport_mask;
53620bba 1449 /* extract hostname and port */
f3bfe388 1450 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1451 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1452 if (*auth) {
aa8bf2fb 1453 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1454 }
53620bba
RB
1455 if (port < 0)
1456 port = RTSP_DEFAULT_PORT;
1457
90abbdba 1458 if (!lower_transport_mask)
2a1d51c5 1459 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1460
3e24c770 1461 if (s->oformat) {
b7dc88fc
MS
1462 /* Only UDP or TCP - UDP multicast isn't supported. */
1463 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1464 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1465 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1466 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1467 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1468 err = AVERROR(EINVAL);
1469 goto fail;
1470 }
1471 }
1472
4bc5cc23
MS
1473 /* Construct the URI used in request; this is similar to s->filename,
1474 * but with authentication credentials removed and RTSP specific options
1475 * stripped out. */
1476 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1477 host, port, "%s", path);
1478
f5d33f52
JA
1479 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1480 /* set up initial handshake for tunneling */
1481 char httpname[1024];
1482 char sessioncookie[17];
1483 char headers[1024];
1484
10ed37b5 1485 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1486 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1487 av_get_random_seed(), av_get_random_seed());
1488
1489 /* GET requests */
6f1b7b39
MS
1490 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1491 &s->interrupt_callback) < 0) {
f5d33f52
JA
1492 err = AVERROR(EIO);
1493 goto fail;
1494 }
1495
1496 /* generate GET headers */
1497 snprintf(headers, sizeof(headers),
1498 "x-sessioncookie: %s\r\n"
1499 "Accept: application/x-rtsp-tunnelled\r\n"
1500 "Pragma: no-cache\r\n"
1501 "Cache-Control: no-cache\r\n",
1502 sessioncookie);
196bf28c 1503 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1504
1505 /* complete the connection */
ddffc2fd 1506 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1507 err = AVERROR(EIO);
1508 goto fail;
1509 }
1510
1511 /* POST requests */
6f1b7b39
MS
1512 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1513 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1514 err = AVERROR(EIO);
1515 goto fail;
1516 }
1517
1518 /* generate POST headers */
1519 snprintf(headers, sizeof(headers),
1520 "x-sessioncookie: %s\r\n"
1521 "Content-Type: application/x-rtsp-tunnelled\r\n"
1522 "Pragma: no-cache\r\n"
1523 "Cache-Control: no-cache\r\n"
1524 "Content-Length: 32767\r\n"
1525 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1526 sessioncookie);
196bf28c 1527 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1528 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1529
a8ead332
MS
1530 /* Initialize the authentication state for the POST session. The HTTP
1531 * protocol implementation doesn't properly handle multi-pass
1532 * authentication for POST requests, since it would require one of
1533 * the following:
1534 * - implementing Expect: 100-continue, which many HTTP servers
1535 * don't support anyway, even less the RTSP servers that do HTTP
1536 * tunneling
1537 * - sending the whole POST data until getting a 401 reply specifying
1538 * what authentication method to use, then resending all that data
1539 * - waiting for potential 401 replies directly after sending the
1540 * POST header (waiting for some unspecified time)
1541 * Therefore, we copy the full auth state, which works for both basic
1542 * and digest. (For digest, we would have to synchronize the nonce
1543 * count variable between the two sessions, if we'd do more requests
1544 * with the original session, though.)
1545 */
1546 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1547
9290f15d 1548 /* complete the connection */
ddffc2fd 1549 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1550 err = AVERROR(EIO);
1551 goto fail;
1552 }
f5d33f52 1553 } else {
48e77473 1554 /* open the tcp connection */
41874d0a 1555 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1556 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1557 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1558 err = AVERROR(EIO);
1559 goto fail;
1560 }
00e4a1f4 1561 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1562 }
53620bba
RB
1563 rt->seq = 0;
1564
1869ea03 1565 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1566 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1567 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1568 NULL, 0, NI_NUMERICHOST);
1569 }
1570
c8965800
RB
1571 /* request options supported by the server; this also detects server
1572 * type */
1cf151e9 1573 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1574 cmd[0] = 0;
2e889ae4 1575 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1576 av_strlcat(cmd,
f75e3da5 1577 /*
1cf151e9
RB
1578 * The following entries are required for proper
1579 * streaming from a Realmedia server. They are
1580 * interdependent in some way although we currently
1581 * don't quite understand how. Values were copied
1582 * from mplayer SVN r23589.
f75e3da5
DB
1583 * ClientChallenge is a 16-byte ID in hex
1584 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1585 */
1586 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1587 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1588 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1589 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1590 sizeof(cmd));
b17d11c6 1591 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1592 if (reply->status_code != RTSP_STATUS_OK) {
1593 err = AVERROR_INVALIDDATA;
1594 goto fail;
1595 }
1596
1597 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1598 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1599 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1600 continue;
bb3244de 1601 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1602 rt->server_type = RTSP_SERVER_WMS;
c8965800 1603 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1604 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1605 break;
1606 }
1607
44b70ce5 1608 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1609 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1610 else if (CONFIG_RTSP_MUXER)
c2688f3a 1611 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1612 if (err)
53620bba 1613 goto fail;
53620bba 1614
8a8754d8 1615 do {
c8965800
RB
1616 int lower_transport = ff_log2_tab[lower_transport_mask &
1617 ~(lower_transport_mask - 1)];
8a8754d8 1618
fef5649a 1619 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1620 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1621 real_challenge : NULL);
8a8754d8 1622 if (err < 0)
7e6ca34f 1623 goto fail;
90abbdba
RB
1624 lower_transport_mask &= ~(1 << lower_transport);
1625 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1626 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1627 goto fail;
1628 }
1629 } while (err);
53620bba 1630
2762a7a2
MS
1631 rt->lower_transport_mask = lower_transport_mask;
1632 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1633 rt->state = RTSP_STATE_IDLE;
c8965800 1634 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1635 return 0;
1636 fail:
3307e6ea 1637 ff_rtsp_close_streams(s);
b8c2c41d 1638 ff_rtsp_close_connections(s);
35cfd646 1639 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1640 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1641 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1642 reply->status_code,
1643 s->filename);
1644 goto redirect;
1645 }
57b5555c 1646 ff_network_close();
1617ad97
FB
1647 return err;
1648}
2e802e38 1649#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1650
44b70ce5 1651#if CONFIG_RTPDEC
0e59034e 1652static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1653 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1654{
1655 RTSPState *rt = s->priv_data;
1656 RTSPStream *rtsp_st;
a8475bbd
LB
1657 int n, i, ret, tcp_fd, timeout_cnt = 0;
1658 int max_p = 0;
1659 struct pollfd *p = rt->p;
0e59034e 1660
c8965800 1661 for (;;) {
9957cdbf 1662 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1663 return AVERROR_EXIT;
321259c1
MS
1664 if (wait_end && wait_end - av_gettime() < 0)
1665 return AVERROR(EAGAIN);
a8475bbd 1666 max_p = 0;
0e59034e 1667 if (rt->rtsp_hd) {
1869ea03 1668 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1669 p[max_p].fd = tcp_fd;
1670 p[max_p++].events = POLLIN;
0e59034e 1671 } else {
0e59034e
RB
1672 tcp_fd = -1;
1673 }
c8965800 1674 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1675 rtsp_st = rt->rtsp_streams[i];
1676 if (rtsp_st->rtp_handle) {
1869ea03 1677 p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle);
a8475bbd 1678 p[max_p++].events = POLLIN;
bfc6db44 1679 p[max_p].fd = ff_rtp_get_rtcp_file_handle(rtsp_st->rtp_handle);
a8475bbd 1680 p[max_p++].events = POLLIN;
0e59034e
RB
1681 }
1682 }
a8475bbd 1683 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1684 if (n > 0) {
a8475bbd 1685 int j = 1 - (tcp_fd == -1);
9cba6f5f 1686 timeout_cnt = 0;
c8965800 1687 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1688 rtsp_st = rt->rtsp_streams[i];
1689 if (rtsp_st->rtp_handle) {
a8475bbd 1690 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1691 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1692 if (ret > 0) {
1693 *prtsp_st = rtsp_st;
1694 return ret;
1695 }
1696 }
a8475bbd 1697 j+=2;
0e59034e
RB
1698 }
1699 }
5fe8021a 1700#if CONFIG_RTSP_DEMUXER
a8475bbd 1701 if (tcp_fd != -1 && p[0].revents & POLLIN) {
0e59034e
RB
1702 RTSPMessageHeader reply;
1703
3df54c6b 1704 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
3032276b
MS
1705 if (ret < 0)
1706 return ret;
0e59034e 1707 /* XXX: parse message */
c02fd3d2 1708 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1709 return 0;
1710 }
5fe8021a 1711#endif
9cba6f5f 1712 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1713 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1714 } else if (n < 0 && errno != EINTR)
1715 return AVERROR(errno);
0e59034e
RB
1716 }
1717}
1718
0526c6f7 1719int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1720{
1721 RTSPState *rt = s->priv_data;
1722 int ret, len;
321259c1
MS
1723 RTSPStream *rtsp_st, *first_queue_st = NULL;
1724 int64_t wait_end = 0;
0e59034e 1725
b20359f5
JA
1726 if (rt->nb_byes == rt->nb_rtsp_streams)
1727 return AVERROR_EOF;
1728
0e59034e
RB
1729 /* get next frames from the same RTP packet */
1730 if (rt->cur_transport_priv) {
c8965800 1731 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1732 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1733 } else
bfc6db44 1734 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
0e59034e
RB
1735 if (ret == 0) {
1736 rt->cur_transport_priv = NULL;
1737 return 0;
1738 } else if (ret == 1) {
1739 return 0;
c8965800 1740 } else
0e59034e 1741 rt->cur_transport_priv = NULL;
0e59034e
RB
1742 }
1743
321259c1
MS
1744 if (rt->transport == RTSP_TRANSPORT_RTP) {
1745 int i;
1746 int64_t first_queue_time = 0;
1747 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1748 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1749 int64_t queue_time;
1750 if (!rtpctx)
1751 continue;
1752 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1753 if (queue_time && (queue_time - first_queue_time < 0 ||
1754 !first_queue_time)) {
1755 first_queue_time = queue_time;
1756 first_queue_st = rt->rtsp_streams[i];
1757 }
1758 }
1759 if (first_queue_time)
1760 wait_end = first_queue_time + s->max_delay;
1761 }
1762
0e59034e
RB
1763 /* read next RTP packet */
1764 redo:
96a7c975
MS
1765 if (!rt->recvbuf) {
1766 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1767 if (!rt->recvbuf)
1768 return AVERROR(ENOMEM);
1769 }
1770
0e59034e
RB
1771 switch(rt->lower_transport) {
1772 default:
5fe8021a 1773#if CONFIG_RTSP_DEMUXER
0e59034e 1774 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1775 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1776 break;
5fe8021a 1777#endif
0e59034e
RB
1778 case RTSP_LOWER_TRANSPORT_UDP:
1779 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1780 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1781 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
bfc6db44 1782 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
0e59034e
RB
1783 break;
1784 }
321259c1
MS
1785 if (len == AVERROR(EAGAIN) && first_queue_st &&
1786 rt->transport == RTSP_TRANSPORT_RTP) {
1787 rtsp_st = first_queue_st;
bfc6db44 1788 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1789 goto end;
1790 }
0e59034e
RB
1791 if (len < 0)
1792 return len;
1793 if (len == 0)
1794 return AVERROR_EOF;
c8965800 1795 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1796 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48 1797 } else {
bfc6db44 1798 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
2cab6b48
MS
1799 if (ret < 0) {
1800 /* Either bad packet, or a RTCP packet. Check if the
1801 * first_rtcp_ntp_time field was initialized. */
1802 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1803 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1804 /* first_rtcp_ntp_time has been initialized for this stream,
1805 * copy the same value to all other uninitialized streams,
1806 * in order to map their timestamp origin to the same ntp time
1807 * as this one. */
1808 int i;
3a1cdcc7
MS
1809 AVStream *st = NULL;
1810 if (rtsp_st->stream_index >= 0)
1811 st = s->streams[rtsp_st->stream_index];
2cab6b48 1812 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1813 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1814 AVStream *st2 = NULL;
1815 if (rt->rtsp_streams[i]->stream_index >= 0)
1816 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1817 if (rtpctx2 && st && st2 &&
1818 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1819 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1820 rtpctx2->rtcp_ts_offset = av_rescale_q(
1821 rtpctx->rtcp_ts_offset, st->time_base,
1822 st2->time_base);
1823 }
2cab6b48
MS
1824 }
1825 }
b20359f5
JA
1826 if (ret == -RTCP_BYE) {
1827 rt->nb_byes++;
1828
1829 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1830 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1831
1832 if (rt->nb_byes == rt->nb_rtsp_streams)
1833 return AVERROR_EOF;
1834 }
2cab6b48
MS
1835 }
1836 }
321259c1 1837end:
0e59034e
RB
1838 if (ret < 0)
1839 goto redo;
c8965800 1840 if (ret == 1)
0e59034e
RB
1841 /* more packets may follow, so we save the RTP context */
1842 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1843
1844 return ret;
1845}
44b70ce5 1846#endif /* CONFIG_RTPDEC */
0e59034e 1847
44b70ce5 1848#if CONFIG_SDP_DEMUXER
cb1fdc61 1849static int sdp_probe(AVProbeData *p1)
93ced3e8 1850{
0e1ceacd 1851 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 1852
3fbd12d1 1853 /* we look for a line beginning "c=IN IP" */
0e1ceacd 1854 while (p < p_end && *p != '\0') {
3fbd12d1
MS
1855 if (p + sizeof("c=IN IP") - 1 < p_end &&
1856 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 1857 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 1858
c8965800 1859 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 1860 if (++p >= p_end)
cb1fdc61 1861 break;
cb1fdc61
FB
1862 if (*p == '\r')
1863 p++;
1864 }
93ced3e8
FB
1865 return 0;
1866}
1867
6e9651d1 1868static int sdp_read_header(AVFormatContext *s)
93ced3e8 1869{
8b1ab7bf 1870 RTSPState *rt = s->priv_data;
93ced3e8
FB
1871 RTSPStream *rtsp_st;
1872 int size, i, err;
1873 char *content;
1874 char url[1024];
1875
57b5555c
MS
1876 if (!ff_network_init())
1877 return AVERROR(EIO);
1878
4fa57d52 1879 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1880 s->max_delay = DEFAULT_REORDERING_DELAY;
4fa57d52 1881
93ced3e8
FB
1882 /* read the whole sdp file */
1883 /* XXX: better loading */
1884 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 1885 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
1886 if (size <= 0) {
1887 av_free(content);
1888 return AVERROR_INVALIDDATA;
1889 }
1890 content[size] ='\0';
1891
f81c7ac7 1892 err = ff_sdp_parse(s, content);
93ced3e8 1893 av_free(content);
f81c7ac7 1894 if (err) goto fail;
93ced3e8
FB
1895
1896 /* open each RTP stream */
c8965800 1897 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 1898 char namebuf[50];
8b1ab7bf 1899 rtsp_st = rt->rtsp_streams[i];
115329f1 1900
3fbd12d1
MS
1901 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
1902 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
57b5555c 1903 ff_url_join(url, sizeof(url), "rtp", NULL,
3fbd12d1 1904 namebuf, rtsp_st->sdp_port,
51369f28
MS
1905 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
1906 rtsp_st->sdp_ttl,
1907 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
6f1b7b39 1908 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1909 &s->interrupt_callback, NULL) < 0) {
93ced3e8
FB
1910 err = AVERROR_INVALIDDATA;
1911 goto fail;
1912 }
ee0cb67f 1913 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1914 goto fail;
93ced3e8
FB
1915 }
1916 return 0;
c8965800 1917fail:
3307e6ea 1918 ff_rtsp_close_streams(s);
57b5555c 1919 ff_network_close();
93ced3e8
FB
1920 return err;
1921}
1922
93ced3e8
FB
1923static int sdp_read_close(AVFormatContext *s)
1924{
3307e6ea 1925 ff_rtsp_close_streams(s);
57b5555c 1926 ff_network_close();
93ced3e8
FB
1927 return 0;
1928}
1929
51369f28
MS
1930static const AVClass sdp_demuxer_class = {
1931 .class_name = "SDP demuxer",
1932 .item_name = av_default_item_name,
1933 .option = sdp_options,
1934 .version = LIBAVUTIL_VERSION_INT,
1935};
1936
c6610a21 1937AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
1938 .name = "sdp",
1939 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
1940 .priv_data_size = sizeof(RTSPState),
1941 .read_probe = sdp_probe,
1942 .read_header = sdp_read_header,
1943 .read_packet = ff_rtsp_fetch_packet,
1944 .read_close = sdp_read_close,
17934c18 1945 .priv_class = &sdp_demuxer_class,
93ced3e8 1946};
44b70ce5 1947#endif /* CONFIG_SDP_DEMUXER */
44594cc7 1948
44b70ce5 1949#if CONFIG_RTP_DEMUXER
44594cc7
MS
1950static int rtp_probe(AVProbeData *p)
1951{
1952 if (av_strstart(p->filename, "rtp:", NULL))
1953 return AVPROBE_SCORE_MAX;
1954 return 0;
1955}
1956
6e9651d1 1957static int rtp_read_header(AVFormatContext *s)
44594cc7
MS
1958{
1959 uint8_t recvbuf[1500];
1960 char host[500], sdp[500];
1961 int ret, port;
1962 URLContext* in = NULL;
1963 int payload_type;
a92be9b8 1964 AVCodecContext codec = { 0 };
44594cc7 1965 struct sockaddr_storage addr;
ae628ec1 1966 AVIOContext pb;
44594cc7 1967 socklen_t addrlen = sizeof(addr);
30266038 1968 RTSPState *rt = s->priv_data;
44594cc7
MS
1969
1970 if (!ff_network_init())
1971 return AVERROR(EIO);
1972
6f1b7b39 1973 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 1974 &s->interrupt_callback, NULL);
44594cc7
MS
1975 if (ret)
1976 goto fail;
1977
1978 while (1) {
bc371aca 1979 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
1980 if (ret == AVERROR(EAGAIN))
1981 continue;
1982 if (ret < 0)
1983 goto fail;
1984 if (ret < 12) {
1985 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
1986 continue;
1987 }
1988
1989 if ((recvbuf[0] & 0xc0) != 0x80) {
1990 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
1991 "received\n");
1992 continue;
1993 }
1994
298a587f 1995 if (RTP_PT_IS_RTCP(recvbuf[1]))
f3a094f2
MS
1996 continue;
1997
44594cc7
MS
1998 payload_type = recvbuf[1] & 0x7f;
1999 break;
2000 }
1869ea03 2001 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 2002 ffurl_close(in);
44594cc7
MS
2003 in = NULL;
2004
44594cc7
MS
2005 if (ff_rtp_get_codec_info(&codec, payload_type)) {
2006 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2007 "without an SDP file describing it\n",
2008 payload_type);
2009 goto fail;
2010 }
2011 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
2012 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2013 "properly you need an SDP file "
2014 "describing it\n");
2015 }
2016
2017 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2018 NULL, 0, s->filename);
2019
2020 snprintf(sdp, sizeof(sdp),
2021 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2022 addr.ss_family == AF_INET ? 4 : 6, host,
2023 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
2024 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2025 port, payload_type);
2026 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2027
e731b8d8 2028 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2029 s->pb = &pb;
2030
2031 /* sdp_read_header initializes this again */
2032 ff_network_close();
2033
30266038
MS
2034 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2035
6e9651d1 2036 ret = sdp_read_header(s);
44594cc7
MS
2037 s->pb = NULL;
2038 return ret;
2039
2040fail:
2041 if (in)
e52a9145 2042 ffurl_close(in);
44594cc7
MS
2043 ff_network_close();
2044 return ret;
2045}
2046
51369f28
MS
2047static const AVClass rtp_demuxer_class = {
2048 .class_name = "RTP demuxer",
2049 .item_name = av_default_item_name,
2050 .option = rtp_options,
2051 .version = LIBAVUTIL_VERSION_INT,
2052};
2053
c6610a21 2054AVInputFormat ff_rtp_demuxer = {
dfc2c4d9
AK
2055 .name = "rtp",
2056 .long_name = NULL_IF_CONFIG_SMALL("RTP input format"),
2057 .priv_data_size = sizeof(RTSPState),
2058 .read_probe = rtp_probe,
2059 .read_header = rtp_read_header,
2060 .read_packet = ff_rtsp_fetch_packet,
2061 .read_close = sdp_read_close,
17934c18
MS
2062 .flags = AVFMT_NOFILE,
2063 .priv_class = &rtp_demuxer_class,
44594cc7 2064};
44b70ce5 2065#endif /* CONFIG_RTP_DEMUXER */