ppc: Drop unnecessary ff_ name prefixes from static functions
[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
3f055f8f
MS
77#define RTSP_REORDERING_OPTS() \
78 { "reorder_queue_size", "Number of packets to buffer for handling of reordered packets", OFFSET(reordering_queue_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC }
79
17fff881 80const AVOption ff_rtsp_options[] = {
e6153f17 81 { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC },
5354a904 82 FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
d58dd4b5 83 { "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
84 { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
85 { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
86 { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
87 { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {.i64 = (1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
3a6765fb 88 RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
f011fcd6 89 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
e6153f17
MS
90 { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC },
91 { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC },
92 { "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 },
3f055f8f 93 RTSP_REORDERING_OPTS(),
17fff881
MS
94 { NULL },
95};
96
51369f28
MS
97static const AVOption sdp_options[] = {
98 RTSP_FLAG_OPTS("sdp_flags", "SDP flags"),
e96406ed 99 { "custom_io", "Use custom IO", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_CUSTOM_IO}, 0, 0, DEC, "rtsp_flags" },
f011fcd6 100 RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"),
3f055f8f 101 RTSP_REORDERING_OPTS(),
51369f28
MS
102 { NULL },
103};
104
105static const AVOption rtp_options[] = {
106 RTSP_FLAG_OPTS("rtp_flags", "RTP flags"),
3f055f8f 107 RTSP_REORDERING_OPTS(),
51369f28
MS
108 { NULL },
109};
110
1ef36a70
RB
111static void get_word_until_chars(char *buf, int buf_size,
112 const char *sep, const char **pp)
1617ad97
FB
113{
114 const char *p;
115 char *q;
116
117 p = *pp;
30619e6e 118 p += strspn(p, SPACE_CHARS);
1617ad97
FB
119 q = buf;
120 while (!strchr(sep, *p) && *p != '\0') {
121 if ((q - buf) < buf_size - 1)
122 *q++ = *p;
123 p++;
124 }
125 if (buf_size > 0)
126 *q = '\0';
127 *pp = p;
128}
129
1ef36a70
RB
130static void get_word_sep(char *buf, int buf_size, const char *sep,
131 const char **pp)
1617ad97 132{
1ef36a70
RB
133 if (**pp == '/') (*pp)++;
134 get_word_until_chars(buf, buf_size, sep, pp);
135}
1617ad97 136
1ef36a70
RB
137static void get_word(char *buf, int buf_size, const char **pp)
138{
139 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
FB
140}
141
8bf0f969
MS
142/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
143 * and end time.
144 * Used for seeking in the rtp stream.
145 */
146static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
147{
148 char buf[256];
149
150 p += strspn(p, SPACE_CHARS);
151 if (!av_stristart(p, "npt=", &p))
152 return;
153
154 *start = AV_NOPTS_VALUE;
155 *end = AV_NOPTS_VALUE;
156
157 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 158 av_parse_time(start, buf, 1);
8bf0f969
MS
159 if (*p == '-') {
160 p++;
161 get_word_sep(buf, sizeof(buf), "-", &p);
9fcae973 162 av_parse_time(end, buf, 1);
8bf0f969 163 }
8bf0f969
MS
164}
165
166static int get_sockaddr(const char *buf, struct sockaddr_storage *sock)
167{
a92be9b8 168 struct addrinfo hints = { 0 }, *ai = NULL;
8bf0f969
MS
169 hints.ai_flags = AI_NUMERICHOST;
170 if (getaddrinfo(buf, NULL, &hints, &ai))
171 return -1;
172 memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
173 freeaddrinfo(ai);
174 return 0;
175}
176
44b70ce5 177#if CONFIG_RTPDEC
003eb642
MS
178static void init_rtp_handler(RTPDynamicProtocolHandler *handler,
179 RTSPStream *rtsp_st, AVCodecContext *codec)
180{
181 if (!handler)
182 return;
2326558d
MS
183 if (codec)
184 codec->codec_id = handler->codec_id;
003eb642 185 rtsp_st->dynamic_handler = handler;
4b3dc857 186 if (handler->alloc) {
9261e6cf 187 rtsp_st->dynamic_protocol_context = handler->alloc();
4b3dc857
MS
188 if (!rtsp_st->dynamic_protocol_context)
189 rtsp_st->dynamic_handler = NULL;
190 }
003eb642
MS
191}
192
c8965800 193/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3 194static int sdp_parse_rtpmap(AVFormatContext *s,
86b6e387 195 AVStream *st, RTSPStream *rtsp_st,
c8965800 196 int payload_type, const char *p)
93ced3e8 197{
86b6e387 198 AVCodecContext *codec = st->codec;
93ced3e8 199 char buf[256];
d1ccf0e0
RD
200 int i;
201 AVCodec *c;
7b49ce2e 202 const char *c_name;
93ced3e8 203
3900d53f 204 /* See if we can handle this kind of payload.
9d50d396
RB
205 * The space should normally not be there but some Real streams or
206 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
207 * have a trailing space. */
208 get_word_sep(buf, sizeof(buf), "/ ", &p);
6099543a
MS
209 if (payload_type < RTP_PT_PRIVATE) {
210 /* We are in a standard case
211 * (from http://www.iana.org/assignments/rtp-parameters). */
6099543a
MS
212 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
213 }
214
36ef5369 215 if (codec->codec_id == AV_CODEC_ID_NONE) {
003eb642
MS
216 RTPDynamicProtocolHandler *handler =
217 ff_rtp_handler_find_by_name(buf, codec->codec_type);
218 init_rtp_handler(handler, rtsp_st, codec);
160918d5
MS
219 /* If no dynamic handler was found, check with the list of standard
220 * allocated types, if such a stream for some reason happens to
221 * use a private payload type. This isn't handled in rtpdec.c, since
222 * the format name from the rtpmap line never is passed into rtpdec. */
223 if (!rtsp_st->dynamic_handler)
224 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
225 }
226
227 c = avcodec_find_decoder(codec->codec_id);
228 if (c && c->name)
7b49ce2e 229 c_name = c->name;
d1ccf0e0 230 else
170870b7 231 c_name = "(null)";
d1ccf0e0 232
7515ed0c
RB
233 get_word_sep(buf, sizeof(buf), "/", &p);
234 i = atoi(buf);
235 switch (codec->codec_type) {
72415b2a 236 case AVMEDIA_TYPE_AUDIO:
7515ed0c
RB
237 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
238 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
239 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
240 if (i > 0) {
241 codec->sample_rate = i;
c3f9ebf7 242 avpriv_set_pts_info(st, 32, 1, codec->sample_rate);
7515ed0c
RB
243 get_word_sep(buf, sizeof(buf), "/", &p);
244 i = atoi(buf);
245 if (i > 0)
246 codec->channels = i;
d1ccf0e0 247 }
7515ed0c
RB
248 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
249 codec->sample_rate);
250 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
251 codec->channels);
252 break;
72415b2a 253 case AVMEDIA_TYPE_VIDEO:
7515ed0c 254 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
86b6e387 255 if (i > 0)
c3f9ebf7 256 avpriv_set_pts_info(st, 32, 1, i);
7515ed0c
RB
257 break;
258 default:
259 break;
260 }
25836606
MS
261 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init)
262 rtsp_st->dynamic_handler->init(s, st->index,
263 rtsp_st->dynamic_protocol_context);
7515ed0c 264 return 0;
93ced3e8
FB
265}
266
c2bfd816 267/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
268 * is broken out as a function because it is used in rtp_h264.c, which is
269 * forthcoming. */
3307e6ea 270int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 271 char *value, int value_size)
d0deedcb 272{
30619e6e 273 *p += strspn(*p, SPACE_CHARS);
c8965800 274 if (**p) {
d0deedcb
RM
275 get_word_sep(attr, attr_size, "=", p);
276 if (**p == '=')
277 (*p)++;
278 get_word_sep(value, value_size, ";", p);
279 if (**p == ';')
280 (*p)++;
281 return 1;
282 }
283 return 0;
284}
285
93ced3e8
FB
286typedef struct SDPParseState {
287 /* SDP only */
3fbd12d1 288 struct sockaddr_storage default_ip;
c8965800
RB
289 int default_ttl;
290 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
291} SDPParseState;
292
293static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
1617ad97
FB
294 int letter, const char *buf)
295{
8b1ab7bf 296 RTSPState *rt = s->priv_data;
1617ad97
FB
297 char buf1[64], st_type[64];
298 const char *p;
72415b2a 299 enum AVMediaType codec_type;
fb65d2ca 300 int payload_type, i;
1617ad97
FB
301 AVStream *st;
302 RTSPStream *rtsp_st;
3fbd12d1 303 struct sockaddr_storage sdp_ip;
93ced3e8
FB
304 int ttl;
305
dfd2a005 306 av_dlog(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
307
308 p = buf;
cb760a47
RB
309 if (s1->skip_media && letter != 'm')
310 return;
c8965800 311 switch (letter) {
93ced3e8
FB
312 case 'c':
313 get_word(buf1, sizeof(buf1), &p);
314 if (strcmp(buf1, "IN") != 0)
315 return;
316 get_word(buf1, sizeof(buf1), &p);
3fbd12d1 317 if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6"))
93ced3e8
FB
318 return;
319 get_word_sep(buf1, sizeof(buf1), "/", &p);
3fbd12d1 320 if (get_sockaddr(buf1, &sdp_ip))
93ced3e8
FB
321 return;
322 ttl = 16;
323 if (*p == '/') {
324 p++;
325 get_word_sep(buf1, sizeof(buf1), "/", &p);
326 ttl = atoi(buf1);
327 }
328 if (s->nb_streams == 0) {
329 s1->default_ip = sdp_ip;
330 s1->default_ttl = ttl;
331 } else {
d9c0510e 332 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
93ced3e8
FB
333 rtsp_st->sdp_ip = sdp_ip;
334 rtsp_st->sdp_ttl = ttl;
335 }
336 break;
1617ad97 337 case 's':
d2d67e42 338 av_dict_set(&s->metadata, "title", p, 0);
1617ad97
FB
339 break;
340 case 'i':
341 if (s->nb_streams == 0) {
d2d67e42 342 av_dict_set(&s->metadata, "comment", p, 0);
1617ad97
FB
343 break;
344 }
345 break;
346 case 'm':
347 /* new stream */
cb760a47 348 s1->skip_media = 0;
f011fcd6 349 codec_type = AVMEDIA_TYPE_UNKNOWN;
1617ad97
FB
350 get_word(st_type, sizeof(st_type), &p);
351 if (!strcmp(st_type, "audio")) {
72415b2a 352 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 353 } else if (!strcmp(st_type, "video")) {
72415b2a 354 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 355 } else if (!strcmp(st_type, "application")) {
72415b2a 356 codec_type = AVMEDIA_TYPE_DATA;
f011fcd6
JB
357 }
358 if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
cb760a47 359 s1->skip_media = 1;
1617ad97
FB
360 return;
361 }
1617ad97
FB
362 rtsp_st = av_mallocz(sizeof(RTSPStream));
363 if (!rtsp_st)
364 return;
8b1ab7bf
FB
365 rtsp_st->stream_index = -1;
366 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
367
368 rtsp_st->sdp_ip = s1->default_ip;
369 rtsp_st->sdp_ttl = s1->default_ttl;
370
93ced3e8
FB
371 get_word(buf1, sizeof(buf1), &p); /* port */
372 rtsp_st->sdp_port = atoi(buf1);
373
df8cf076
MS
374 get_word(buf1, sizeof(buf1), &p); /* protocol */
375 if (!strcmp(buf1, "udp"))
376 rt->transport = RTSP_TRANSPORT_RAW;
86d9181c
MS
377 else if (strstr(buf1, "/AVPF") || strstr(buf1, "/SAVPF"))
378 rtsp_st->feedback = 1;
115329f1 379
93ced3e8
FB
380 /* XXX: handle list of formats */
381 get_word(buf1, sizeof(buf1), &p); /* format list */
382 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 383
7ed19d7f 384 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf 385 /* no corresponding stream */
2326558d
MS
386 if (rt->transport == RTSP_TRANSPORT_RAW) {
387 if (!rt->ts && CONFIG_RTPDEC)
388 rt->ts = ff_mpegts_parse_open(s);
389 } else {
390 RTPDynamicProtocolHandler *handler;
391 handler = ff_rtp_handler_find_by_id(
392 rtsp_st->sdp_payload_type, AVMEDIA_TYPE_DATA);
393 init_rtp_handler(handler, rtsp_st, NULL);
394 if (handler && handler->init)
395 handler->init(s, -1, rtsp_st->dynamic_protocol_context);
396 }
45600148
MS
397 } else if (rt->server_type == RTSP_SERVER_WMS &&
398 codec_type == AVMEDIA_TYPE_DATA) {
399 /* RTX stream, a stream that carries all the other actual
400 * audio/video streams. Don't expose this to the callers. */
8b1ab7bf 401 } else {
84ad31ff 402 st = avformat_new_stream(s, NULL);
8b1ab7bf
FB
403 if (!st)
404 return;
84ad31ff 405 st->id = rt->nb_rtsp_streams - 1;
8b1ab7bf 406 rtsp_st->stream_index = st->index;
01f4895c 407 st->codec->codec_type = codec_type;
d1ccf0e0 408 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
6a7e31a9 409 RTPDynamicProtocolHandler *handler;
8b1ab7bf 410 /* if standard payload type, we can find the codec right now */
bf6d9818 411 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
bbd8f547
MS
412 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
413 st->codec->sample_rate > 0)
c3f9ebf7 414 avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
6a7e31a9
MS
415 /* Even static payload types may need a custom depacketizer */
416 handler = ff_rtp_handler_find_by_id(
417 rtsp_st->sdp_payload_type, st->codec->codec_type);
418 init_rtp_handler(handler, rtsp_st, st->codec);
25836606
MS
419 if (handler && handler->init)
420 handler->init(s, st->index,
421 rtsp_st->dynamic_protocol_context);
8b1ab7bf
FB
422 }
423 }
1617ad97 424 /* put a default control url */
00eb13e0 425 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 426 sizeof(rtsp_st->control_url));
1617ad97
FB
427 break;
428 case 'a':
00eb13e0
AS
429 if (av_strstart(p, "control:", &p)) {
430 if (s->nb_streams == 0) {
431 if (!strncmp(p, "rtsp://", 7))
432 av_strlcpy(rt->control_uri, p,
433 sizeof(rt->control_uri));
434 } else {
0b6a7ff4
MS
435 char proto[32];
436 /* get the control url */
d9c0510e 437 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
115329f1 438
0b6a7ff4
MS
439 /* XXX: may need to add full url resolution */
440 av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
441 NULL, NULL, 0, p);
442 if (proto[0] == '\0') {
443 /* relative control URL */
444 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
445 av_strlcat(rtsp_st->control_url, "/",
446 sizeof(rtsp_st->control_url));
447 av_strlcat(rtsp_st->control_url, p,
448 sizeof(rtsp_st->control_url));
449 } else
450 av_strlcpy(rtsp_st->control_url, p,
451 sizeof(rtsp_st->control_url));
00eb13e0 452 }
83d14c85 453 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 454 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 455 get_word(buf1, sizeof(buf1), &p);
93ced3e8 456 payload_type = atoi(buf1);
d9c0510e 457 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
45600148
MS
458 if (rtsp_st->stream_index >= 0) {
459 st = s->streams[rtsp_st->stream_index];
460 sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p);
461 }
7fc8ac7f
JA
462 } else if (av_strstart(p, "fmtp:", &p) ||
463 av_strstart(p, "framesize:", &p)) {
93ced3e8 464 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
d0deedcb
RM
465 // let dynamic protocol handlers have a stab at the line.
466 get_word(buf1, sizeof(buf1), &p);
467 payload_type = atoi(buf1);
d9c0510e
MS
468 for (i = 0; i < rt->nb_rtsp_streams; i++) {
469 rtsp_st = rt->rtsp_streams[i];
c8965800
RB
470 if (rtsp_st->sdp_payload_type == payload_type &&
471 rtsp_st->dynamic_handler &&
472 rtsp_st->dynamic_handler->parse_sdp_a_line)
473 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
474 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 475 }
c8965800 476 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
477 int64_t start, end;
478
479 // this is so that seeking on a streamed file can work.
480 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
481 s->start_time = start;
482 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
483 s->duration = (end == AV_NOPTS_VALUE) ?
484 AV_NOPTS_VALUE : end - start;
119b4668
RB
485 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
486 if (atoi(p) == 1)
487 rt->transport = RTSP_TRANSPORT_RDT;
bb776f3b
MS
488 } else if (av_strstart(p, "SampleRate:integer;", &p) &&
489 s->nb_streams > 0) {
490 st = s->streams[s->nb_streams - 1];
491 st->codec->sample_rate = atoi(p);
424da308
MS
492 } else if (av_strstart(p, "crypto:", &p) && s->nb_streams > 0) {
493 // RFC 4568
494 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
495 get_word(buf1, sizeof(buf1), &p); // ignore tag
496 get_word(rtsp_st->crypto_suite, sizeof(rtsp_st->crypto_suite), &p);
497 p += strspn(p, SPACE_CHARS);
498 if (av_strstart(p, "inline:", &p))
499 get_word(rtsp_st->crypto_params, sizeof(rtsp_st->crypto_params), &p);
1a30d541
RB
500 } else {
501 if (rt->server_type == RTSP_SERVER_WMS)
502 ff_wms_parse_sdp_a_line(s, p);
503 if (s->nb_streams > 0) {
45600148
MS
504 rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
505
c4a3d032 506 if (rt->server_type == RTSP_SERVER_REAL)
45600148 507 ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p);
c4a3d032 508
c4a3d032
RB
509 if (rtsp_st->dynamic_handler &&
510 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800 511 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
45600148 512 rtsp_st->stream_index,
c4a3d032 513 rtsp_st->dynamic_protocol_context, buf);
1a30d541 514 }
1617ad97
FB
515 }
516 break;
517 }
518}
519
0526c6f7 520int ff_sdp_parse(AVFormatContext *s, const char *content)
1617ad97 521{
a8475bbd 522 RTSPState *rt = s->priv_data;
1617ad97
FB
523 const char *p;
524 int letter;
9211bcdd
RB
525 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
526 * contain long SDP lines containing complete ASF Headers (several
527 * kB) or arrays of MDPR (RM stream descriptor) headers plus
528 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
529 * buffer is large.
530 *
afcea58c
JA
531 * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
532 * in rtpdec_xiph.c. */
373afbaf 533 char buf[16384], *q;
a92be9b8 534 SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state;
115329f1 535
1617ad97 536 p = content;
c8965800 537 for (;;) {
30619e6e 538 p += strspn(p, SPACE_CHARS);
1617ad97
FB
539 letter = *p;
540 if (letter == '\0')
541 break;
542 p++;
543 if (*p != '=')
544 goto next_line;
545 p++;
546 /* get the content */
547 q = buf;
b6892136 548 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
549 if ((q - buf) < sizeof(buf) - 1)
550 *q++ = *p;
551 p++;
552 }
553 *q = '\0';
93ced3e8 554 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
555 next_line:
556 while (*p != '\n' && *p != '\0')
557 p++;
558 if (*p == '\n')
559 p++;
560 }
a8475bbd
LB
561 rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1));
562 if (!rt->p) return AVERROR(ENOMEM);
1617ad97
FB
563 return 0;
564}
44b70ce5 565#endif /* CONFIG_RTPDEC */
1617ad97 566
93e7490e
MS
567void ff_rtsp_undo_setup(AVFormatContext *s)
568{
569 RTSPState *rt = s->priv_data;
570 int i;
571
572 for (i = 0; i < rt->nb_rtsp_streams; i++) {
573 RTSPStream *rtsp_st = rt->rtsp_streams[i];
574 if (!rtsp_st)
575 continue;
576 if (rtsp_st->transport_priv) {
577 if (s->oformat) {
578 AVFormatContext *rtpctx = rtsp_st->transport_priv;
579 av_write_trailer(rtpctx);
580 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
581 uint8_t *ptr;
6dc7d80d 582 avio_close_dyn_buf(rtpctx->pb, &ptr);
93e7490e
MS
583 av_free(ptr);
584 } else {
22a3212e 585 avio_close(rtpctx->pb);
93e7490e 586 }
b22dbb29 587 avformat_free_context(rtpctx);
93e7490e
MS
588 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
589 ff_rdt_parse_close(rtsp_st->transport_priv);
125c6c07 590 else if (rt->transport == RTSP_TRANSPORT_RTP && CONFIG_RTPDEC)
bfc6db44 591 ff_rtp_parse_close(rtsp_st->transport_priv);
93e7490e
MS
592 }
593 rtsp_st->transport_priv = NULL;
594 if (rtsp_st->rtp_handle)
e52a9145 595 ffurl_close(rtsp_st->rtp_handle);
93e7490e
MS
596 rtsp_st->rtp_handle = NULL;
597 }
598}
599
1ced9da3 600/* close and free RTSP streams */
3307e6ea 601void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 602{
52aa4338 603 RTSPState *rt = s->priv_data;
1ced9da3
LA
604 int i;
605 RTSPStream *rtsp_st;
606
93e7490e 607 ff_rtsp_undo_setup(s);
c8965800 608 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
609 rtsp_st = rt->rtsp_streams[i];
610 if (rtsp_st) {
1ced9da3 611 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
9261e6cf 612 rtsp_st->dynamic_handler->free(
c8965800 613 rtsp_st->dynamic_protocol_context);
ea7f0807 614 av_free(rtsp_st);
1ced9da3
LA
615 }
616 }
617 av_free(rt->rtsp_streams);
618 if (rt->asf_ctx) {
cd3716b9 619 avformat_close_input(&rt->asf_ctx);
1ced9da3 620 }
1243c722
MS
621 if (rt->ts && CONFIG_RTPDEC)
622 ff_mpegts_parse_close(rt->ts);
a8475bbd 623 av_free(rt->p);
96a7c975 624 av_free(rt->recvbuf);
1ced9da3
LA
625}
626
6e71c120 627int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
628{
629 RTSPState *rt = s->priv_data;
630 AVStream *st = NULL;
3f055f8f
MS
631 int reordering_queue_size = rt->reordering_queue_size;
632 if (reordering_queue_size < 0) {
633 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay)
634 reordering_queue_size = 0;
635 else
636 reordering_queue_size = RTP_REORDER_QUEUE_DEFAULT_SIZE;
637 }
1ced9da3
LA
638
639 /* open the RTP context */
640 if (rtsp_st->stream_index >= 0)
641 st = s->streams[rtsp_st->stream_index];
642 if (!st)
643 s->ctx_flags |= AVFMTCTX_NOHEADER;
644
44b70ce5 645 if (s->oformat && CONFIG_RTSP_MUXER) {
68c81308
MS
646 int ret = ff_rtp_chain_mux_open(&rtsp_st->transport_priv, s, st,
647 rtsp_st->rtp_handle,
8034130e
LB
648 RTSP_TCP_MAX_PACKET_SIZE,
649 rtsp_st->stream_index);
c2bfd816 650 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51 651 rtsp_st->rtp_handle = NULL;
68c81308
MS
652 if (ret < 0)
653 return ret;
df8cf076
MS
654 } else if (rt->transport == RTSP_TRANSPORT_RAW) {
655 return 0; // Don't need to open any parser here
44b70ce5 656 } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
1ced9da3
LA
657 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
658 rtsp_st->dynamic_protocol_context,
659 rtsp_st->dynamic_handler);
44b70ce5 660 else if (CONFIG_RTPDEC)
3f95f0dd 661 rtsp_st->transport_priv = ff_rtp_parse_open(s, st,
58ee0991 662 rtsp_st->sdp_payload_type,
3f055f8f 663 reordering_queue_size);
1ced9da3
LA
664
665 if (!rtsp_st->transport_priv) {
666 return AVERROR(ENOMEM);
df8cf076 667 } else if (rt->transport == RTSP_TRANSPORT_RTP && CONFIG_RTPDEC) {
c8965800 668 if (rtsp_st->dynamic_handler) {
bfc6db44
MS
669 ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
670 rtsp_st->dynamic_protocol_context,
671 rtsp_st->dynamic_handler);
1ced9da3 672 }
424da308
MS
673 if (rtsp_st->crypto_suite[0])
674 ff_rtp_parse_set_crypto(rtsp_st->transport_priv,
675 rtsp_st->crypto_suite,
676 rtsp_st->crypto_params);
1ced9da3
LA
677 }
678
679 return 0;
680}
681
6f5a3d0a 682#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1617ad97
FB
683static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
684{
ddce7dab
MR
685 const char *q;
686 char *p;
1617ad97
FB
687 int v;
688
ddce7dab
MR
689 q = *pp;
690 q += strspn(q, SPACE_CHARS);
691 v = strtol(q, &p, 10);
1617ad97
FB
692 if (*p == '-') {
693 p++;
694 *min_ptr = v;
ddce7dab 695 v = strtol(p, &p, 10);
1617ad97
FB
696 *max_ptr = v;
697 } else {
698 *min_ptr = v;
699 *max_ptr = v;
700 }
701 *pp = p;
702}
703
704/* XXX: only one transport specification is parsed */
a9e534d5 705static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
706{
707 char transport_protocol[16];
708 char profile[16];
709 char lower_transport[16];
710 char parameter[16];
711 RTSPTransportField *th;
712 char buf[256];
115329f1 713
1617ad97 714 reply->nb_transports = 0;
115329f1 715
c8965800 716 for (;;) {
30619e6e 717 p += strspn(p, SPACE_CHARS);
1617ad97
FB
718 if (*p == '\0')
719 break;
720
721 th = &reply->transports[reply->nb_transports];
722
115329f1 723 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 724 "/", &p);
bb3244de 725 if (!av_strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
726 get_word_sep(profile, sizeof(profile), "/;,", &p);
727 lower_transport[0] = '\0';
728 /* rtp/avp/<protocol> */
729 if (*p == '/') {
7ecc634e
LB
730 get_word_sep(lower_transport, sizeof(lower_transport),
731 ";,", &p);
119b4668
RB
732 }
733 th->transport = RTSP_TRANSPORT_RTP;
bb3244de
RD
734 } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") ||
735 !av_strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 736 /* x-pn-tng/<protocol> */
e1502118
LB
737 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
738 profile[0] = '\0';
119b4668 739 th->transport = RTSP_TRANSPORT_RDT;
df8cf076
MS
740 } else if (!av_strcasecmp(transport_protocol, "raw")) {
741 get_word_sep(profile, sizeof(profile), "/;,", &p);
742 lower_transport[0] = '\0';
743 /* raw/raw/<protocol> */
744 if (*p == '/') {
745 get_word_sep(lower_transport, sizeof(lower_transport),
746 ";,", &p);
747 }
748 th->transport = RTSP_TRANSPORT_RAW;
1617ad97 749 }
bb3244de 750 if (!av_strcasecmp(lower_transport, "TCP"))
90abbdba 751 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 752 else
90abbdba 753 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 754
1617ad97
FB
755 if (*p == ';')
756 p++;
757 /* get each parameter */
758 while (*p != '\0' && *p != ',') {
759 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
760 if (!strcmp(parameter, "port")) {
761 if (*p == '=') {
762 p++;
763 rtsp_parse_range(&th->port_min, &th->port_max, &p);
764 }
765 } else if (!strcmp(parameter, "client_port")) {
766 if (*p == '=') {
767 p++;
115329f1 768 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
769 &th->client_port_max, &p);
770 }
771 } else if (!strcmp(parameter, "server_port")) {
772 if (*p == '=') {
773 p++;
115329f1 774 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
775 &th->server_port_max, &p);
776 }
777 } else if (!strcmp(parameter, "interleaved")) {
778 if (*p == '=') {
779 p++;
115329f1 780 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
781 &th->interleaved_max, &p);
782 }
783 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
784 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
785 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
786 } else if (!strcmp(parameter, "ttl")) {
787 if (*p == '=') {
f21d5c90 788 char *end;
1617ad97 789 p++;
f21d5c90
MS
790 th->ttl = strtol(p, &end, 10);
791 p = end;
1617ad97
FB
792 }
793 } else if (!strcmp(parameter, "destination")) {
1617ad97
FB
794 if (*p == '=') {
795 p++;
796 get_word_sep(buf, sizeof(buf), ";,", &p);
7934b15d 797 get_sockaddr(buf, &th->destination);
1617ad97 798 }
619298a8
JW
799 } else if (!strcmp(parameter, "source")) {
800 if (*p == '=') {
801 p++;
802 get_word_sep(buf, sizeof(buf), ";,", &p);
803 av_strlcpy(th->source, buf, sizeof(th->source));
804 }
45b06858
JO
805 } else if (!strcmp(parameter, "mode")) {
806 if (*p == '=') {
807 p++;
808 get_word_sep(buf, sizeof(buf), ";, ", &p);
809 if (!strcmp(buf, "record") ||
810 !strcmp(buf, "receive"))
811 th->mode_record = 1;
812 }
1617ad97 813 }
619298a8 814
1617ad97
FB
815 while (*p != ';' && *p != '\0' && *p != ',')
816 p++;
817 if (*p == ';')
818 p++;
819 }
820 if (*p == ',')
821 p++;
822
823 reply->nb_transports++;
824 }
825}
826
29db7c3a
MS
827static void handle_rtp_info(RTSPState *rt, const char *url,
828 uint32_t seq, uint32_t rtptime)
829{
830 int i;
831 if (!rtptime || !url[0])
832 return;
833 if (rt->transport != RTSP_TRANSPORT_RTP)
834 return;
835 for (i = 0; i < rt->nb_rtsp_streams; i++) {
836 RTSPStream *rtsp_st = rt->rtsp_streams[i];
837 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
838 if (!rtpctx)
839 continue;
840 if (!strcmp(rtsp_st->control_url, url)) {
841 rtpctx->base_timestamp = rtptime;
842 break;
843 }
844 }
845}
846
847static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
848{
849 int read = 0;
850 char key[20], value[1024], url[1024] = "";
851 uint32_t seq = 0, rtptime = 0;
852
853 for (;;) {
854 p += strspn(p, SPACE_CHARS);
855 if (!*p)
856 break;
857 get_word_sep(key, sizeof(key), "=", &p);
858 if (*p != '=')
859 break;
860 p++;
861 get_word_sep(value, sizeof(value), ";, ", &p);
862 read++;
863 if (!strcmp(key, "url"))
864 av_strlcpy(url, value, sizeof(url));
865 else if (!strcmp(key, "seq"))
4515f9b5 866 seq = strtoul(value, NULL, 10);
29db7c3a 867 else if (!strcmp(key, "rtptime"))
4515f9b5 868 rtptime = strtoul(value, NULL, 10);
29db7c3a
MS
869 if (*p == ',') {
870 handle_rtp_info(rt, url, seq, rtptime);
871 url[0] = '\0';
872 seq = rtptime = 0;
873 read = 0;
874 }
875 if (*p)
876 p++;
877 }
878 if (read > 0)
879 handle_rtp_info(rt, url, seq, rtptime);
880}
881
2626308a 882void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
77223c53 883 RTSPState *rt, const char *method)
1617ad97
FB
884{
885 const char *p;
886
887 /* NOTE: we do case independent match for broken servers */
888 p = buf;
f7d78f36 889 if (av_stristart(p, "Session:", &p)) {
30e79845 890 int t;
1617ad97 891 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
892 if (av_stristart(p, ";timeout=", &p) &&
893 (t = strtol(p, NULL, 10)) > 0) {
894 reply->timeout = t;
895 }
f7d78f36 896 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 897 reply->content_length = strtol(p, NULL, 10);
f7d78f36 898 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 899 rtsp_parse_transport(reply, p);
f7d78f36 900 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 901 reply->seq = strtol(p, NULL, 10);
f7d78f36 902 } else if (av_stristart(p, "Range:", &p)) {
31693e00 903 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed 904 } else if (av_stristart(p, "RealChallenge1:", &p)) {
30619e6e 905 p += strspn(p, SPACE_CHARS);
30aa6aed 906 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa 907 } else if (av_stristart(p, "Server:", &p)) {
30619e6e 908 p += strspn(p, SPACE_CHARS);
7a86bafa 909 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
910 } else if (av_stristart(p, "Notice:", &p) ||
911 av_stristart(p, "X-Notice:", &p)) {
912 reply->notice = strtol(p, NULL, 10);
d243ba30 913 } else if (av_stristart(p, "Location:", &p)) {
30619e6e 914 p += strspn(p, SPACE_CHARS);
d243ba30 915 av_strlcpy(reply->location, p , sizeof(reply->location));
acc9ed14 916 } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) {
30619e6e 917 p += strspn(p, SPACE_CHARS);
acc9ed14
MS
918 ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
919 } else if (av_stristart(p, "Authentication-Info:", &p) && rt) {
30619e6e 920 p += strspn(p, SPACE_CHARS);
acc9ed14 921 ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
d2995eb9 922 } else if (av_stristart(p, "Content-Base:", &p) && rt) {
dd22cfb1 923 p += strspn(p, SPACE_CHARS);
d2995eb9
MS
924 if (method && !strcmp(method, "DESCRIBE"))
925 av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
29db7c3a
MS
926 } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
927 p += strspn(p, SPACE_CHARS);
928 if (method && !strcmp(method, "PLAY"))
929 rtsp_parse_rtp_info(rt, p);
0b4949b5
MS
930 } else if (av_stristart(p, "Public:", &p) && rt) {
931 if (strstr(p, "GET_PARAMETER") &&
932 method && !strcmp(method, "OPTIONS"))
933 rt->get_parameter_supported = 1;
30eae325
MS
934 } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) {
935 p += strspn(p, SPACE_CHARS);
936 rt->accept_dynamic_rate = atoi(p);
fcd0298c
JO
937 } else if (av_stristart(p, "Content-Type:", &p)) {
938 p += strspn(p, SPACE_CHARS);
939 av_strlcpy(reply->content_type, p, sizeof(reply->content_type));
1617ad97
FB
940 }
941}
942
b7b8fc34 943/* skip a RTP/TCP interleaved packet */
ec55edba 944void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
945{
946 RTSPState *rt = s->priv_data;
947 int ret, len, len1;
948 uint8_t buf[1024];
949
dce37564 950 ret = ffurl_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
951 if (ret != 3)
952 return;
80fb8234 953 len = AV_RB16(buf + 1);
67c9cd69 954
dfd2a005 955 av_dlog(s, "skipping RTP packet len=%d\n", len);
67c9cd69 956
b7b8fc34
FB
957 /* skip payload */
958 while (len > 0) {
959 len1 = len;
960 if (len1 > sizeof(buf))
961 len1 = sizeof(buf);
dce37564 962 ret = ffurl_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
963 if (ret != len1)
964 return;
965 len -= len1;
966 }
967}
1617ad97 968
3307e6ea 969int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933 970 unsigned char **content_ptr,
3df54c6b 971 int return_on_interleaved_data, const char *method)
1617ad97
FB
972{
973 RTSPState *rt = s->priv_data;
974 char buf[4096], buf1[1024], *q;
975 unsigned char ch;
976 const char *p;
1a6b9a98 977 int ret, content_length, line_count = 0, request = 0;
1617ad97
FB
978 unsigned char *content = NULL;
979
1a6b9a98
TW
980start:
981 line_count = 0;
982 request = 0;
983 content = NULL;
d541a7d2 984 memset(reply, 0, sizeof(*reply));
1617ad97 985
1617ad97 986 /* parse reply (XXX: use buffers) */
1617ad97 987 rt->last_reply[0] = '\0';
c8965800 988 for (;;) {
1617ad97 989 q = buf;
c8965800 990 for (;;) {
dce37564 991 ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1);
dfd2a005 992 av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132 993 if (ret != 1)
2401660d 994 return AVERROR_EOF;
1617ad97
FB
995 if (ch == '\n')
996 break;
b7b8fc34
FB
997 if (ch == '$') {
998 /* XXX: only parse it if first char on line ? */
7e726132
RB
999 if (return_on_interleaved_data) {
1000 return 1;
1001 } else
ec55edba 1002 ff_rtsp_skip_packet(s);
b7b8fc34 1003 } else if (ch != '\r') {
1617ad97
FB
1004 if ((q - buf) < sizeof(buf) - 1)
1005 *q++ = ch;
1006 }
1007 }
1008 *q = '\0';
67c9cd69 1009
dfd2a005 1010 av_dlog(s, "line='%s'\n", buf);
67c9cd69 1011
1617ad97
FB
1012 /* test if last line */
1013 if (buf[0] == '\0')
1014 break;
1015 p = buf;
1016 if (line_count == 0) {
1017 /* get reply code */
1018 get_word(buf1, sizeof(buf1), &p);
1a6b9a98
TW
1019 if (!strncmp(buf1, "RTSP/", 5)) {
1020 get_word(buf1, sizeof(buf1), &p);
1021 reply->status_code = atoi(buf1);
1022 av_strlcpy(reply->reason, p, sizeof(reply->reason));
1023 } else {
1024 av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method
1025 get_word(buf1, sizeof(buf1), &p); // object
1026 request = 1;
1027 }
1617ad97 1028 } else {
77223c53 1029 ff_rtsp_parse_line(reply, p, rt, method);
75e61b0e
MR
1030 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
1031 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
1032 }
1033 line_count++;
1034 }
115329f1 1035
1a6b9a98 1036 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request)
75e61b0e 1037 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 1038
1617ad97
FB
1039 content_length = reply->content_length;
1040 if (content_length > 0) {
1041 /* leave some room for a trailing '\0' (useful for simple parsing) */
1042 content = av_malloc(content_length + 1);
dce37564 1043 ffurl_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
1044 content[content_length] = '\0';
1045 }
1046 if (content_ptr)
1047 *content_ptr = content;
e2e2e7dd
AB
1048 else
1049 av_free(content);
7e726132 1050
1a6b9a98
TW
1051 if (request) {
1052 char buf[1024];
1053 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
1054 const char* ptr = buf;
1055
1056 if (!strcmp(reply->reason, "OPTIONS")) {
1057 snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n");
1058 if (reply->seq)
1059 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq);
1060 if (reply->session_id[0])
1061 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n",
1062 reply->session_id);
1063 } else {
1064 snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n");
1065 }
1066 av_strlcat(buf, "\r\n", sizeof(buf));
1067
1068 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1069 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1070 ptr = base64buf;
1071 }
1072 ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr));
1073
1074 rt->last_cmd_time = av_gettime();
1075 /* Even if the request from the server had data, it is not the data
1076 * that the caller wants or expects. The memory could also be leaked
1077 * if the actual following reply has content data. */
1078 if (content_ptr)
1079 av_freep(content_ptr);
1080 /* If method is set, this is called from ff_rtsp_send_cmd,
1081 * where a reply to exactly this request is awaited. For
705eeb5e 1082 * callers from within packet receiving, we just want to
1a6b9a98
TW
1083 * return to the caller and go back to receiving packets. */
1084 if (method)
1085 goto start;
1086 return 0;
1087 }
1088
7ed8211b
LB
1089 if (rt->seq != reply->seq) {
1090 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
1091 rt->seq, reply->seq);
1092 }
1093
fccb1770
RB
1094 /* EOS */
1095 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
1096 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 1097 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 1098 rt->state = RTSP_STATE_IDLE;
c8965800 1099 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 1100 return AVERROR(EIO); /* data or server error */
c8965800 1101 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
1102 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
1103 return AVERROR(EPERM);
1104
7e726132 1105 return 0;
1617ad97
FB
1106}
1107
57c4d01e
DEP
1108/**
1109 * Send a command to the RTSP server without waiting for the reply.
1110 *
1111 * @param s RTSP (de)muxer context
1112 * @param method the method for the request
1113 * @param url the target url for the request
1114 * @param headers extra header lines to include in the request
1115 * @param send_content if non-null, the data to send as request body content
1116 * @param send_content_length the length of the send_content data, or 0 if
1117 * send_content is null
1118 *
1119 * @return zero if success, nonzero otherwise
1120 */
1121static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
1122 const char *method, const char *url,
1123 const char *headers,
1124 const unsigned char *send_content,
1125 int send_content_length)
29b9f58b
RB
1126{
1127 RTSPState *rt = s->priv_data;
f5d33f52
JA
1128 char buf[4096], *out_buf;
1129 char base64buf[AV_BASE64_SIZE(sizeof(buf))];
29b9f58b 1130
f5d33f52
JA
1131 /* Add in RTSP headers */
1132 out_buf = buf;
29b9f58b 1133 rt->seq++;
b17d11c6
MS
1134 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1135 if (headers)
1136 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1137 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1138 if (rt->session_id[0] != '\0' && (!headers ||
1139 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1140 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1141 }
aa8bf2fb
MS
1142 if (rt->auth[0]) {
1143 char *str = ff_http_auth_create_response(&rt->auth_state,
1144 rt->auth, url, method);
1145 if (str)
1146 av_strlcat(buf, str, sizeof(buf));
1147 av_free(str);
1148 }
dfd017bf
MS
1149 if (send_content_length > 0 && send_content)
1150 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1151 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69 1152
f5d33f52
JA
1153 /* base64 encode rtsp if tunneling */
1154 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1155 av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
1156 out_buf = base64buf;
1157 }
1158
dfd2a005 1159 av_dlog(s, "Sending:\n%s--\n", buf);
67c9cd69 1160
925e908b 1161 ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf));
f5d33f52
JA
1162 if (send_content_length > 0 && send_content) {
1163 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1164 av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
1165 "with content data not supported\n");
1166 return AVERROR_PATCHWELCOME;
1167 }
925e908b 1168 ffurl_write(rt->rtsp_hd_out, send_content, send_content_length);
f5d33f52 1169 }
30e79845 1170 rt->last_cmd_time = av_gettime();
d0382374
JA
1171
1172 return 0;
30e79845
RB
1173}
1174
d0382374 1175int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
fc490fcf 1176 const char *url, const char *headers)
dfd017bf 1177{
d0382374 1178 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1179}
1180
d0382374 1181int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
fc490fcf
MS
1182 const char *headers, RTSPMessageHeader *reply,
1183 unsigned char **content_ptr)
30e79845 1184{
d0382374 1185 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
fc490fcf 1186 content_ptr, NULL, 0);
29b9f58b
RB
1187}
1188
d0382374 1189int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
fc490fcf
MS
1190 const char *method, const char *url,
1191 const char *header,
1192 RTSPMessageHeader *reply,
1193 unsigned char **content_ptr,
1194 const unsigned char *send_content,
1195 int send_content_length)
dfd017bf 1196{
30af0779
MS
1197 RTSPState *rt = s->priv_data;
1198 HTTPAuthType cur_auth_type;
2f96cc1f 1199 int ret, attempts = 0;
30af0779
MS
1200
1201retry:
1202 cur_auth_type = rt->auth_state.auth_type;
d0382374 1203 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
fc490fcf
MS
1204 send_content,
1205 send_content_length)))
d0382374 1206 return ret;
dfd017bf 1207
3df54c6b 1208 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0)
d0382374 1209 return ret;
2f96cc1f 1210 attempts++;
30af0779 1211
2f96cc1f
MS
1212 if (reply->status_code == 401 &&
1213 (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) &&
1214 rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2)
30af0779 1215 goto retry;
d0382374 1216
bf55cf19 1217 if (reply->status_code > 400){
d93fdcbf 1218 av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
bf55cf19 1219 method,
d93fdcbf
LB
1220 reply->status_code,
1221 reply->reason);
bf55cf19
LB
1222 av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
1223 }
1224
d0382374 1225 return 0;
dfd017bf
MS
1226}
1227
fef5649a 1228int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
c8965800 1229 int lower_transport, const char *real_challenge)
1617ad97
FB
1230{
1231 RTSPState *rt = s->priv_data;
58f09785 1232 int rtx = 0, j, i, err, interleave = 0, port_off;
1617ad97 1233 RTSPStream *rtsp_st;
a9e534d5 1234 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1235 char cmd[2048];
e9dea59f
RB
1236 const char *trans_pref;
1237
119b4668 1238 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f 1239 trans_pref = "x-pn-tng";
df8cf076
MS
1240 else if (rt->transport == RTSP_TRANSPORT_RAW)
1241 trans_pref = "RAW/RAW";
e9dea59f
RB
1242 else
1243 trans_pref = "RTP/AVP";
115329f1 1244
30e79845
RB
1245 /* default timeout: 1 minute */
1246 rt->timeout = 60;
1247
1617ad97
FB
1248 /* for each stream, make the setup request */
1249 /* XXX: we assume the same server is used for the control of each
c8965800 1250 * RTSP stream */
d1ccf0e0 1251
58f09785
DV
1252 /* Choose a random starting offset within the first half of the
1253 * port range, to allow for a number of ports to try even if the offset
1254 * happens to be at the end of the random range. */
1255 port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2);
1256 /* even random offset */
1257 port_off -= port_off & 0x01;
1258
1259 for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1260 char transport[2048];
1261
f75e3da5 1262 /*
f830c9a4
RB
1263 * WMS serves all UDP data over a single connection, the RTX, which
1264 * isn't necessarily the first in the SDP but has to be the first
1265 * to be set up, else the second/third SETUP will fail with a 461.
1266 */
1267 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1268 rt->server_type == RTSP_SERVER_WMS) {
1269 if (i == 0) {
1270 /* rtx first */
1271 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1272 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1273 if (len >= 4 &&
c8965800
RB
1274 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1275 "/rtx"))
f830c9a4
RB
1276 break;
1277 }
1278 if (rtx == rt->nb_rtsp_streams)
1279 return -1; /* no RTX found */
1280 rtsp_st = rt->rtsp_streams[rtx];
1281 } else
1282 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1283 } else
2fea9650 1284 rtsp_st = rt->rtsp_streams[i];
1617ad97 1285
1617ad97 1286 /* RTP/UDP */
90abbdba 1287 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1288 char buf[256];
85fb7b34 1289
f830c9a4
RB
1290 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1291 port = reply->transports[0].client_port_min;
1292 goto have_port;
1293 }
1294
85fb7b34 1295 /* first try in specified port range */
dbb06b8c 1296 while (j <= rt->rtp_port_max) {
bc495bad
DV
1297 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1298 "?localport=%d", j);
1299 /* we will use two ports per rtp stream (rtp and rtcp) */
1300 j += 2;
1301 if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE,
1302 &s->interrupt_callback, NULL))
1303 goto rtp_opened;
1617ad97 1304 }
85fb7b34 1305
a3b058b7
MS
1306 av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
1307 err = AVERROR(EIO);
1308 goto fail;
85fb7b34
FB
1309
1310 rtp_opened:
bfc6db44 1311 port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle);
f830c9a4 1312 have_port:
0ad306bc 1313 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1314 "%s/UDP;", trans_pref);
1315 if (rt->server_type != RTSP_SERVER_REAL)
1316 av_strlcat(transport, "unicast;", sizeof(transport));
1317 av_strlcatf(transport, sizeof(transport),
1318 "client_port=%d", port);
f830c9a4
RB
1319 if (rt->transport == RTSP_TRANSPORT_RTP &&
1320 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1321 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1322 }
1323
1324 /* RTP/TCP */
90abbdba 1325 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
f75e3da5 1326 /* For WMS streams, the application streams are only used for
090438cc
RB
1327 * UDP. When trying to set it up for TCP streams, the server
1328 * will return an error. Therefore, we skip those streams. */
1329 if (rt->server_type == RTSP_SERVER_WMS &&
45600148
MS
1330 (rtsp_st->stream_index < 0 ||
1331 s->streams[rtsp_st->stream_index]->codec->codec_type ==
1332 AVMEDIA_TYPE_DATA))
090438cc 1333 continue;
0ad306bc 1334 snprintf(transport, sizeof(transport) - 1,
d1c6e47c 1335 "%s/TCP;", trans_pref);
895678f8 1336 if (rt->transport != RTSP_TRANSPORT_RDT)
d1c6e47c
RB
1337 av_strlcat(transport, "unicast;", sizeof(transport));
1338 av_strlcatf(transport, sizeof(transport),
1339 "interleaved=%d-%d",
1340 interleave, interleave + 1);
1341 interleave += 2;
1617ad97
FB
1342 }
1343
90abbdba 1344 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1345 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1346 "%s/UDP;multicast", trans_pref);
1617ad97 1347 }
69adcc4f 1348 if (s->oformat) {
bbc80386 1349 av_strlcat(transport, ";mode=record", sizeof(transport));
69adcc4f 1350 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1351 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1352 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1353 snprintf(cmd, sizeof(cmd),
b6892136 1354 "Transport: %s\r\n",
b17d11c6 1355 transport);
76b0d03d
MS
1356 if (rt->accept_dynamic_rate)
1357 av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd));
44b70ce5 1358 if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) {
e9dea59f
RB
1359 char real_res[41], real_csum[9];
1360 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1361 real_challenge);
1362 av_strlcatf(cmd, sizeof(cmd),
1363 "If-Match: %s\r\n"
1364 "RealChallenge2: %s, sd=%s\r\n",
1365 rt->session_id, real_res, real_csum);
1366 }
b17d11c6 1367 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1368 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1369 err = 1;
1370 goto fail;
7e6ca34f
RB
1371 } else if (reply->status_code != RTSP_STATUS_OK ||
1372 reply->nb_transports != 1) {
1617ad97
FB
1373 err = AVERROR_INVALIDDATA;
1374 goto fail;
1375 }
1376
1377 /* XXX: same protocol for all streams is required */
1378 if (i > 0) {
119b4668
RB
1379 if (reply->transports[0].lower_transport != rt->lower_transport ||
1380 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1381 err = AVERROR_INVALIDDATA;
1382 goto fail;
1383 }
1384 } else {
90abbdba 1385 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1386 rt->transport = reply->transports[0].transport;
1617ad97
FB
1387 }
1388
8c579c1c
MS
1389 /* Fail if the server responded with another lower transport mode
1390 * than what we requested. */
1391 if (reply->transports[0].lower_transport != lower_transport) {
1392 av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
1393 err = AVERROR_INVALIDDATA;
1394 goto fail;
1617ad97
FB
1395 }
1396
90abbdba
RB
1397 switch(reply->transports[0].lower_transport) {
1398 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1399 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1400 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1401 break;
115329f1 1402
c8965800 1403 case RTSP_LOWER_TRANSPORT_UDP: {
a92c30d7 1404 char url[1024], options[30] = "";
c8965800 1405
9867aea5 1406 if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC)
a92c30d7 1407 av_strlcpy(options, "?connect=1", sizeof(options));
619298a8
JW
1408 /* Use source address if specified */
1409 if (reply->transports[0].source[0]) {
1410 ff_url_join(url, sizeof(url), "rtp", NULL,
1411 reply->transports[0].source,
d8407339 1412 reply->transports[0].server_port_min, "%s", options);
619298a8 1413 } else {
7bac991f 1414 ff_url_join(url, sizeof(url), "rtp", NULL, host,
d8407339 1415 reply->transports[0].server_port_min, "%s", options);
619298a8 1416 }
c8965800 1417 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
bfc6db44 1418 ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
c8965800
RB
1419 err = AVERROR_INVALIDDATA;
1420 goto fail;
1617ad97 1421 }
9c8fa20d
MS
1422 /* Try to initialize the connection state in a
1423 * potential NAT router by sending dummy packets.
1424 * RTP/RTCP dummy packets are used for RDT, too.
1425 */
44b70ce5
MS
1426 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat &&
1427 CONFIG_RTPDEC)
bfc6db44 1428 ff_rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1429 break;
c8965800
RB
1430 }
1431 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
6294d708 1432 char url[1024], namebuf[50], optbuf[20] = "";
7934b15d 1433 struct sockaddr_storage addr;
c8965800
RB
1434 int port, ttl;
1435
7934b15d
MS
1436 if (reply->transports[0].destination.ss_family) {
1437 addr = reply->transports[0].destination;
c8965800
RB
1438 port = reply->transports[0].port_min;
1439 ttl = reply->transports[0].ttl;
1440 } else {
7934b15d 1441 addr = rtsp_st->sdp_ip;
c8965800
RB
1442 port = rtsp_st->sdp_port;
1443 ttl = rtsp_st->sdp_ttl;
1444 }
6294d708
MS
1445 if (ttl > 0)
1446 snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl);
7934b15d
MS
1447 getnameinfo((struct sockaddr*) &addr, sizeof(addr),
1448 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
1449 ff_url_join(url, sizeof(url), "rtp", NULL, namebuf,
6294d708 1450 port, "%s", optbuf);
6f1b7b39 1451 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
ddffc2fd 1452 &s->interrupt_callback, NULL) < 0) {
c8965800
RB
1453 err = AVERROR_INVALIDDATA;
1454 goto fail;
1617ad97
FB
1455 }
1456 break;
1457 }
c8965800 1458 }
d1ccf0e0 1459
6e71c120 1460 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1461 goto fail;
1617ad97
FB
1462 }
1463
62c3c8ca 1464 if (rt->nb_rtsp_streams && reply->timeout > 0)
30e79845
RB
1465 rt->timeout = reply->timeout;
1466
2e889ae4 1467 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1468 rt->need_subscription = 1;
1469
53620bba
RB
1470 return 0;
1471
1472fail:
aeb2de1c 1473 ff_rtsp_undo_setup(s);
53620bba
RB
1474 return err;
1475}
1476
b8c2c41d
JA
1477void ff_rtsp_close_connections(AVFormatContext *s)
1478{
1479 RTSPState *rt = s->priv_data;
e52a9145
AK
1480 if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out);
1481 ffurl_close(rt->rtsp_hd);
6217b645 1482 rt->rtsp_hd = rt->rtsp_hd_out = NULL;
b8c2c41d
JA
1483}
1484
3307e6ea 1485int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1486{
1487 RTSPState *rt = s->priv_data;
921da217 1488 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
03f8fc08 1489 int port, err, tcp_fd;
354b7573 1490 RTSPMessageHeader reply1 = {0}, *reply = &reply1;
90abbdba 1491 int lower_transport_mask = 0;
2762a7a2 1492 char real_challenge[64] = "";
03f8fc08
MS
1493 struct sockaddr_storage peer;
1494 socklen_t peer_len = sizeof(peer);
57b5555c 1495
dbb06b8c
MS
1496 if (rt->rtp_port_max < rt->rtp_port_min) {
1497 av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less "
1498 "than min port %d\n", rt->rtp_port_max,
1499 rt->rtp_port_min);
1500 return AVERROR(EINVAL);
1501 }
1502
57b5555c
MS
1503 if (!ff_network_init())
1504 return AVERROR(EIO);
eca4850c 1505
4fa57d52 1506 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 1507 s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0;
4fa57d52 1508
f5d33f52 1509 rt->control_transport = RTSP_MODE_PLAIN;
eca4850c
MS
1510 if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) {
1511 rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP;
1512 rt->control_transport = RTSP_MODE_TUNNEL;
1513 }
1514 /* Only pass through valid flags from here */
1515 rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
eca4850c
MS
1516
1517redirect:
1518 lower_transport_mask = rt->lower_transport_mask;
53620bba 1519 /* extract hostname and port */
f3bfe388 1520 av_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1521 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1522 if (*auth) {
aa8bf2fb 1523 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1524 }
53620bba
RB
1525 if (port < 0)
1526 port = RTSP_DEFAULT_PORT;
1527
90abbdba 1528 if (!lower_transport_mask)
2a1d51c5 1529 lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
53620bba 1530
3e24c770 1531 if (s->oformat) {
b7dc88fc
MS
1532 /* Only UDP or TCP - UDP multicast isn't supported. */
1533 lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
1534 (1 << RTSP_LOWER_TRANSPORT_TCP);
f5d33f52 1535 if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
3e24c770 1536 av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
b7dc88fc 1537 "only UDP and TCP are supported for output.\n");
3e24c770
MS
1538 err = AVERROR(EINVAL);
1539 goto fail;
1540 }
1541 }
1542
4bc5cc23
MS
1543 /* Construct the URI used in request; this is similar to s->filename,
1544 * but with authentication credentials removed and RTSP specific options
1545 * stripped out. */
1546 ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL,
1547 host, port, "%s", path);
1548
f5d33f52
JA
1549 if (rt->control_transport == RTSP_MODE_TUNNEL) {
1550 /* set up initial handshake for tunneling */
1551 char httpname[1024];
1552 char sessioncookie[17];
1553 char headers[1024];
1554
10ed37b5 1555 ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path);
f5d33f52
JA
1556 snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x",
1557 av_get_random_seed(), av_get_random_seed());
1558
1559 /* GET requests */
6f1b7b39
MS
1560 if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ,
1561 &s->interrupt_callback) < 0) {
f5d33f52
JA
1562 err = AVERROR(EIO);
1563 goto fail;
1564 }
1565
1566 /* generate GET headers */
1567 snprintf(headers, sizeof(headers),
1568 "x-sessioncookie: %s\r\n"
1569 "Accept: application/x-rtsp-tunnelled\r\n"
1570 "Pragma: no-cache\r\n"
1571 "Cache-Control: no-cache\r\n",
1572 sessioncookie);
196bf28c 1573 av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
f5d33f52
JA
1574
1575 /* complete the connection */
ddffc2fd 1576 if (ffurl_connect(rt->rtsp_hd, NULL)) {
f5d33f52
JA
1577 err = AVERROR(EIO);
1578 goto fail;
1579 }
1580
1581 /* POST requests */
6f1b7b39
MS
1582 if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE,
1583 &s->interrupt_callback) < 0 ) {
f5d33f52
JA
1584 err = AVERROR(EIO);
1585 goto fail;
1586 }
1587
1588 /* generate POST headers */
1589 snprintf(headers, sizeof(headers),
1590 "x-sessioncookie: %s\r\n"
1591 "Content-Type: application/x-rtsp-tunnelled\r\n"
1592 "Pragma: no-cache\r\n"
1593 "Cache-Control: no-cache\r\n"
1594 "Content-Length: 32767\r\n"
1595 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
1596 sessioncookie);
196bf28c 1597 av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
6149485f 1598 av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
f5d33f52 1599
a8ead332
MS
1600 /* Initialize the authentication state for the POST session. The HTTP
1601 * protocol implementation doesn't properly handle multi-pass
1602 * authentication for POST requests, since it would require one of
1603 * the following:
1604 * - implementing Expect: 100-continue, which many HTTP servers
1605 * don't support anyway, even less the RTSP servers that do HTTP
1606 * tunneling
1607 * - sending the whole POST data until getting a 401 reply specifying
1608 * what authentication method to use, then resending all that data
1609 * - waiting for potential 401 replies directly after sending the
1610 * POST header (waiting for some unspecified time)
1611 * Therefore, we copy the full auth state, which works for both basic
1612 * and digest. (For digest, we would have to synchronize the nonce
1613 * count variable between the two sessions, if we'd do more requests
1614 * with the original session, though.)
1615 */
1616 ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd);
1617
9290f15d 1618 /* complete the connection */
ddffc2fd 1619 if (ffurl_connect(rt->rtsp_hd_out, NULL)) {
9290f15d
MS
1620 err = AVERROR(EIO);
1621 goto fail;
1622 }
f5d33f52 1623 } else {
48e77473 1624 /* open the tcp connection */
41874d0a 1625 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
6f1b7b39 1626 if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE,
ddffc2fd 1627 &s->interrupt_callback, NULL) < 0) {
41874d0a
JA
1628 err = AVERROR(EIO);
1629 goto fail;
1630 }
00e4a1f4 1631 rt->rtsp_hd_out = rt->rtsp_hd;
f5d33f52 1632 }
53620bba
RB
1633 rt->seq = 0;
1634
1869ea03 1635 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
03f8fc08
MS
1636 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1637 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1638 NULL, 0, NI_NUMERICHOST);
1639 }
1640
c8965800
RB
1641 /* request options supported by the server; this also detects server
1642 * type */
1cf151e9 1643 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1644 cmd[0] = 0;
2e889ae4 1645 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1646 av_strlcat(cmd,
f75e3da5 1647 /*
1cf151e9
RB
1648 * The following entries are required for proper
1649 * streaming from a Realmedia server. They are
1650 * interdependent in some way although we currently
1651 * don't quite understand how. Values were copied
1652 * from mplayer SVN r23589.
f75e3da5
DB
1653 * ClientChallenge is a 16-byte ID in hex
1654 * CompanyID is a 16-byte ID in base64
1cf151e9
RB
1655 */
1656 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1657 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1658 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1659 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1660 sizeof(cmd));
b17d11c6 1661 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1662 if (reply->status_code != RTSP_STATUS_OK) {
1663 err = AVERROR_INVALIDDATA;
1664 goto fail;
1665 }
1666
1667 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1668 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1669 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1670 continue;
bb3244de 1671 } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) {
7a86bafa 1672 rt->server_type = RTSP_SERVER_WMS;
c8965800 1673 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1674 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1675 break;
1676 }
1677
44b70ce5 1678 if (s->iformat && CONFIG_RTSP_DEMUXER)
0526c6f7 1679 err = ff_rtsp_setup_input_streams(s, reply);
44b70ce5 1680 else if (CONFIG_RTSP_MUXER)
c2688f3a 1681 err = ff_rtsp_setup_output_streams(s, host);
e23d195d 1682 if (err)
53620bba 1683 goto fail;
53620bba 1684
8a8754d8 1685 do {
c8965800
RB
1686 int lower_transport = ff_log2_tab[lower_transport_mask &
1687 ~(lower_transport_mask - 1)];
8a8754d8 1688
fef5649a 1689 err = ff_rtsp_make_setup_request(s, host, port, lower_transport,
2e889ae4 1690 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1691 real_challenge : NULL);
8a8754d8 1692 if (err < 0)
7e6ca34f 1693 goto fail;
90abbdba
RB
1694 lower_transport_mask &= ~(1 << lower_transport);
1695 if (lower_transport_mask == 0 && err == 1) {
28c4741a 1696 err = AVERROR(EPROTONOSUPPORT);
8a8754d8
RB
1697 goto fail;
1698 }
1699 } while (err);
53620bba 1700
2762a7a2
MS
1701 rt->lower_transport_mask = lower_transport_mask;
1702 av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
ff762d6e 1703 rt->state = RTSP_STATE_IDLE;
c8965800 1704 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1705 return 0;
1706 fail:
3307e6ea 1707 ff_rtsp_close_streams(s);
b8c2c41d 1708 ff_rtsp_close_connections(s);
35cfd646 1709 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1710 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1711 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1712 reply->status_code,
1713 s->filename);
1714 goto redirect;
1715 }
57b5555c 1716 ff_network_close();
1617ad97
FB
1717 return err;
1718}
2e802e38 1719#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
1617ad97 1720
44b70ce5 1721#if CONFIG_RTPDEC
0e59034e 1722static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
321259c1 1723 uint8_t *buf, int buf_size, int64_t wait_end)
0e59034e
RB
1724{
1725 RTSPState *rt = s->priv_data;
1726 RTSPStream *rtsp_st;
a8475bbd
LB
1727 int n, i, ret, tcp_fd, timeout_cnt = 0;
1728 int max_p = 0;
1729 struct pollfd *p = rt->p;
e7993ece 1730 int *fds = NULL, fdsnum, fdsidx;
0e59034e 1731
c8965800 1732 for (;;) {
9957cdbf 1733 if (ff_check_interrupt(&s->interrupt_callback))
c76374c6 1734 return AVERROR_EXIT;
321259c1
MS
1735 if (wait_end && wait_end - av_gettime() < 0)
1736 return AVERROR(EAGAIN);
a8475bbd 1737 max_p = 0;
0e59034e 1738 if (rt->rtsp_hd) {
1869ea03 1739 tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
a8475bbd
LB
1740 p[max_p].fd = tcp_fd;
1741 p[max_p++].events = POLLIN;
0e59034e 1742 } else {
0e59034e
RB
1743 tcp_fd = -1;
1744 }
c8965800 1745 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1746 rtsp_st = rt->rtsp_streams[i];
1747 if (rtsp_st->rtp_handle) {
e7993ece
JO
1748 if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle,
1749 &fds, &fdsnum)) {
1750 av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n");
1751 return ret;
1752 }
1753 if (fdsnum != 2) {
1754 av_log(s, AV_LOG_ERROR,
1755 "Number of fds %d not supported\n", fdsnum);
1756 return AVERROR_INVALIDDATA;
1757 }
1758 for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) {
1759 p[max_p].fd = fds[fdsidx];
1760 p[max_p++].events = POLLIN;
1761 }
1762 av_free(fds);
0e59034e
RB
1763 }
1764 }
a8475bbd 1765 n = poll(p, max_p, POLL_TIMEOUT_MS);
0e59034e 1766 if (n > 0) {
a8475bbd 1767 int j = 1 - (tcp_fd == -1);
9cba6f5f 1768 timeout_cnt = 0;
c8965800 1769 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1770 rtsp_st = rt->rtsp_streams[i];
1771 if (rtsp_st->rtp_handle) {
a8475bbd 1772 if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) {
bc371aca 1773 ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size);
0e59034e
RB
1774 if (ret > 0) {
1775 *prtsp_st = rtsp_st;
1776 return ret;
1777 }
1778 }
a8475bbd 1779 j+=2;
0e59034e
RB
1780 }
1781 }
5fe8021a 1782#if CONFIG_RTSP_DEMUXER
a8475bbd 1783 if (tcp_fd != -1 && p[0].revents & POLLIN) {
a8ad6ffa
JO
1784 if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
1785 if (rt->state == RTSP_STATE_STREAMING) {
1786 if (!ff_rtsp_parse_streaming_commands(s))
1787 return AVERROR_EOF;
1788 else
1789 av_log(s, AV_LOG_WARNING,
1790 "Unable to answer to TEARDOWN\n");
1791 } else
1792 return 0;
1793 } else {
1794 RTSPMessageHeader reply;
1795 ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
1796 if (ret < 0)
1797 return ret;
1798 /* XXX: parse message */
1799 if (rt->state != RTSP_STATE_STREAMING)
1800 return 0;
1801 }
0e59034e 1802 }
5fe8021a 1803#endif
9cba6f5f 1804 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
28c4741a 1805 return AVERROR(ETIMEDOUT);
9cba6f5f
SG
1806 } else if (n < 0 && errno != EINTR)
1807 return AVERROR(errno);
0e59034e
RB
1808 }
1809}
1810
e96406ed
MS
1811static int pick_stream(AVFormatContext *s, RTSPStream **rtsp_st,
1812 const uint8_t *buf, int len)
1813{
1814 RTSPState *rt = s->priv_data;
1815 int i;
1816 if (len < 0)
1817 return len;
1818 if (rt->nb_rtsp_streams == 1) {
1819 *rtsp_st = rt->rtsp_streams[0];
1820 return len;
1821 }
1822 if (len >= 8 && rt->transport == RTSP_TRANSPORT_RTP) {
1823 if (RTP_PT_IS_RTCP(rt->recvbuf[1])) {
1824 int no_ssrc = 0;
1825 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1826 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
1827 if (!rtpctx)
1828 continue;
1829 if (rtpctx->ssrc == AV_RB32(&buf[4])) {
1830 *rtsp_st = rt->rtsp_streams[i];
1831 return len;
1832 }
1833 if (!rtpctx->ssrc)
1834 no_ssrc = 1;
1835 }
1836 if (no_ssrc) {
1837 av_log(s, AV_LOG_WARNING,
1838 "Unable to pick stream for packet - SSRC not known for "
1839 "all streams\n");
1840 return AVERROR(EAGAIN);
1841 }
1842 } else {
1843 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1844 if ((buf[1] & 0x7f) == rt->rtsp_streams[i]->sdp_payload_type) {
1845 *rtsp_st = rt->rtsp_streams[i];
1846 return len;
1847 }
1848 }
1849 }
1850 }
1851 av_log(s, AV_LOG_WARNING, "Unable to pick stream for packet\n");
1852 return AVERROR(EAGAIN);
1853}
1854
0526c6f7 1855int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
0e59034e
RB
1856{
1857 RTSPState *rt = s->priv_data;
1858 int ret, len;
321259c1
MS
1859 RTSPStream *rtsp_st, *first_queue_st = NULL;
1860 int64_t wait_end = 0;
0e59034e 1861
b20359f5
JA
1862 if (rt->nb_byes == rt->nb_rtsp_streams)
1863 return AVERROR_EOF;
1864
0e59034e
RB
1865 /* get next frames from the same RTP packet */
1866 if (rt->cur_transport_priv) {
c8965800 1867 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1868 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1243c722 1869 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
bfc6db44 1870 ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1243c722
MS
1871 } else if (rt->ts && CONFIG_RTPDEC) {
1872 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos);
1873 if (ret >= 0) {
1874 rt->recvbuf_pos += ret;
1875 ret = rt->recvbuf_pos < rt->recvbuf_len;
1876 }
2f41eaa9
MS
1877 } else
1878 ret = -1;
0e59034e
RB
1879 if (ret == 0) {
1880 rt->cur_transport_priv = NULL;
1881 return 0;
1882 } else if (ret == 1) {
1883 return 0;
c8965800 1884 } else
0e59034e 1885 rt->cur_transport_priv = NULL;
0e59034e
RB
1886 }
1887
8729698d 1888redo:
321259c1
MS
1889 if (rt->transport == RTSP_TRANSPORT_RTP) {
1890 int i;
1891 int64_t first_queue_time = 0;
1892 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1893 RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv;
9e99f84f
MS
1894 int64_t queue_time;
1895 if (!rtpctx)
1896 continue;
1897 queue_time = ff_rtp_queued_packet_time(rtpctx);
321259c1
MS
1898 if (queue_time && (queue_time - first_queue_time < 0 ||
1899 !first_queue_time)) {
1900 first_queue_time = queue_time;
1901 first_queue_st = rt->rtsp_streams[i];
1902 }
1903 }
8729698d 1904 if (first_queue_time) {
321259c1 1905 wait_end = first_queue_time + s->max_delay;
8729698d
MS
1906 } else {
1907 wait_end = 0;
1908 first_queue_st = NULL;
1909 }
321259c1
MS
1910 }
1911
0e59034e 1912 /* read next RTP packet */
96a7c975
MS
1913 if (!rt->recvbuf) {
1914 rt->recvbuf = av_malloc(RECVBUF_SIZE);
1915 if (!rt->recvbuf)
1916 return AVERROR(ENOMEM);
1917 }
1918
0e59034e
RB
1919 switch(rt->lower_transport) {
1920 default:
5fe8021a 1921#if CONFIG_RTSP_DEMUXER
0e59034e 1922 case RTSP_LOWER_TRANSPORT_TCP:
0526c6f7 1923 len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
0e59034e 1924 break;
5fe8021a 1925#endif
0e59034e
RB
1926 case RTSP_LOWER_TRANSPORT_UDP:
1927 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
321259c1 1928 len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end);
2c35a6bd 1929 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
e96406ed
MS
1930 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, rtsp_st->rtp_handle, NULL, len);
1931 break;
1932 case RTSP_LOWER_TRANSPORT_CUSTOM:
f811cd2d
MS
1933 if (first_queue_st && rt->transport == RTSP_TRANSPORT_RTP &&
1934 wait_end && wait_end < av_gettime())
1935 len = AVERROR(EAGAIN);
1936 else
1937 len = ffio_read_partial(s->pb, rt->recvbuf, RECVBUF_SIZE);
e96406ed
MS
1938 len = pick_stream(s, &rtsp_st, rt->recvbuf, len);
1939 if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1940 ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, NULL, s->pb, len);
0e59034e
RB
1941 break;
1942 }
321259c1
MS
1943 if (len == AVERROR(EAGAIN) && first_queue_st &&
1944 rt->transport == RTSP_TRANSPORT_RTP) {
1945 rtsp_st = first_queue_st;
bfc6db44 1946 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0);
321259c1
MS
1947 goto end;
1948 }
0e59034e
RB
1949 if (len < 0)
1950 return len;
1951 if (len == 0)
1952 return AVERROR_EOF;
c8965800 1953 if (rt->transport == RTSP_TRANSPORT_RDT) {
ad4ad27f 1954 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
df8cf076 1955 } else if (rt->transport == RTSP_TRANSPORT_RTP) {
bfc6db44 1956 ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
86d9181c
MS
1957 if (rtsp_st->feedback) {
1958 AVIOContext *pb = NULL;
1959 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_CUSTOM)
1960 pb = s->pb;
1961 ff_rtp_send_rtcp_feedback(rtsp_st->transport_priv, rtsp_st->rtp_handle, pb);
1962 }
2cab6b48
MS
1963 if (ret < 0) {
1964 /* Either bad packet, or a RTCP packet. Check if the
1965 * first_rtcp_ntp_time field was initialized. */
1966 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1967 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1968 /* first_rtcp_ntp_time has been initialized for this stream,
1969 * copy the same value to all other uninitialized streams,
1970 * in order to map their timestamp origin to the same ntp time
1971 * as this one. */
1972 int i;
3a1cdcc7
MS
1973 AVStream *st = NULL;
1974 if (rtsp_st->stream_index >= 0)
1975 st = s->streams[rtsp_st->stream_index];
2cab6b48 1976 for (i = 0; i < rt->nb_rtsp_streams; i++) {
744a882f 1977 RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv;
3a1cdcc7
MS
1978 AVStream *st2 = NULL;
1979 if (rt->rtsp_streams[i]->stream_index >= 0)
1980 st2 = s->streams[rt->rtsp_streams[i]->stream_index];
1981 if (rtpctx2 && st && st2 &&
1982 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
2cab6b48 1983 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
3a1cdcc7
MS
1984 rtpctx2->rtcp_ts_offset = av_rescale_q(
1985 rtpctx->rtcp_ts_offset, st->time_base,
1986 st2->time_base);
1987 }
2cab6b48
MS
1988 }
1989 }
b20359f5
JA
1990 if (ret == -RTCP_BYE) {
1991 rt->nb_byes++;
1992
1993 av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
1994 rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams);
1995
1996 if (rt->nb_byes == rt->nb_rtsp_streams)
1997 return AVERROR_EOF;
1998 }
2cab6b48 1999 }
1243c722
MS
2000 } else if (rt->ts && CONFIG_RTPDEC) {
2001 ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len);
2002 if (ret >= 0) {
2003 if (ret < len) {
2004 rt->recvbuf_len = len;
2005 rt->recvbuf_pos = ret;
2006 rt->cur_transport_priv = rt->ts;
2007 return 1;
2008 } else {
2009 ret = 0;
2010 }
2011 }
df8cf076
MS
2012 } else {
2013 return AVERROR_INVALIDDATA;
2cab6b48 2014 }
321259c1 2015end:
0e59034e
RB
2016 if (ret < 0)
2017 goto redo;
c8965800 2018 if (ret == 1)
0e59034e
RB
2019 /* more packets may follow, so we save the RTP context */
2020 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
2021
2022 return ret;
2023}
44b70ce5 2024#endif /* CONFIG_RTPDEC */
0e59034e 2025
44b70ce5 2026#if CONFIG_SDP_DEMUXER
cb1fdc61 2027static int sdp_probe(AVProbeData *p1)
93ced3e8 2028{
0e1ceacd 2029 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61 2030
3fbd12d1 2031 /* we look for a line beginning "c=IN IP" */
0e1ceacd 2032 while (p < p_end && *p != '\0') {
3fbd12d1
MS
2033 if (p + sizeof("c=IN IP") - 1 < p_end &&
2034 av_strstart(p, "c=IN IP", NULL))
cb1fdc61 2035 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 2036
c8965800 2037 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 2038 if (++p >= p_end)
cb1fdc61 2039 break;
cb1fdc61
FB
2040 if (*p == '\r')
2041 p++;
2042 }
93ced3e8
FB
2043 return 0;
2044}
2045
6e9651d1 2046static int sdp_read_header(AVFormatContext *s)
93ced3e8 2047{
8b1ab7bf 2048 RTSPState *rt = s->priv_data;
93ced3e8
FB
2049 RTSPStream *rtsp_st;
2050 int size, i, err;
2051 char *content;
2052 char url[1024];
2053
57b5555c
MS
2054 if (!ff_network_init())
2055 return AVERROR(EIO);
2056
4fa57d52 2057 if (s->max_delay < 0) /* Not set by the caller */
ccfa8aa2 2058 s->max_delay = DEFAULT_REORDERING_DELAY;
e96406ed
MS
2059 if (rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)
2060 rt->lower_transport = RTSP_LOWER_TRANSPORT_CUSTOM;
4fa57d52 2061
93ced3e8
FB
2062 /* read the whole sdp file */
2063 /* XXX: better loading */
2064 content = av_malloc(SDP_MAX_SIZE);
b7effd4e 2065 size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2066 if (size <= 0) {
2067 av_free(content);
2068 return AVERROR_INVALIDDATA;
2069 }
2070 content[size] ='\0';
2071
f81c7ac7 2072 err = ff_sdp_parse(s, content);
93ced3e8 2073 av_free(content);
f81c7ac7 2074 if (err) goto fail;
93ced3e8
FB
2075
2076 /* open each RTP stream */
c8965800 2077 for (i = 0; i < rt->nb_rtsp_streams; i++) {
3fbd12d1 2078 char namebuf[50];
8b1ab7bf 2079 rtsp_st = rt->rtsp_streams[i];
115329f1 2080
e96406ed
MS
2081 if (!(rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)) {
2082 getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip),
2083 namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST);
2084 ff_url_join(url, sizeof(url), "rtp", NULL,
2085 namebuf, rtsp_st->sdp_port,
2086 "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port,
2087 rtsp_st->sdp_ttl,
2088 rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0);
2089 if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE,
2090 &s->interrupt_callback, NULL) < 0) {
2091 err = AVERROR_INVALIDDATA;
2092 goto fail;
2093 }
93ced3e8 2094 }
6e71c120 2095 if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2096 goto fail;
93ced3e8
FB
2097 }
2098 return 0;
c8965800 2099fail:
3307e6ea 2100 ff_rtsp_close_streams(s);
57b5555c 2101 ff_network_close();
93ced3e8
FB
2102 return err;
2103}
2104
93ced3e8
FB
2105static int sdp_read_close(AVFormatContext *s)
2106{
3307e6ea 2107 ff_rtsp_close_streams(s);
57b5555c 2108 ff_network_close();
93ced3e8
FB
2109 return 0;
2110}
2111
51369f28
MS
2112static const AVClass sdp_demuxer_class = {
2113 .class_name = "SDP demuxer",
2114 .item_name = av_default_item_name,
2115 .option = sdp_options,
2116 .version = LIBAVUTIL_VERSION_INT,
2117};
2118
c6610a21 2119AVInputFormat ff_sdp_demuxer = {
dfc2c4d9
AK
2120 .name = "sdp",
2121 .long_name = NULL_IF_CONFIG_SMALL("SDP"),
2122 .priv_data_size = sizeof(RTSPState),
2123 .read_probe = sdp_probe,
2124 .read_header = sdp_read_header,
2125 .read_packet = ff_rtsp_fetch_packet,
2126 .read_close = sdp_read_close,
17934c18 2127 .priv_class = &sdp_demuxer_class,
93ced3e8 2128};
44b70ce5 2129#endif /* CONFIG_SDP_DEMUXER */
44594cc7 2130
44b70ce5 2131#if CONFIG_RTP_DEMUXER
44594cc7
MS
2132static int rtp_probe(AVProbeData *p)
2133{
2134 if (av_strstart(p->filename, "rtp:", NULL))
2135 return AVPROBE_SCORE_MAX;
2136 return 0;
2137}
2138
6e9651d1 2139static int rtp_read_header(AVFormatContext *s)
44594cc7 2140{
350ad50b 2141 uint8_t recvbuf[RTP_MAX_PACKET_LENGTH];
44594cc7
MS
2142 char host[500], sdp[500];
2143 int ret, port;
2144 URLContext* in = NULL;
2145 int payload_type;
a92be9b8 2146 AVCodecContext codec = { 0 };
44594cc7 2147 struct sockaddr_storage addr;
ae628ec1 2148 AVIOContext pb;
44594cc7 2149 socklen_t addrlen = sizeof(addr);
30266038 2150 RTSPState *rt = s->priv_data;
44594cc7
MS
2151
2152 if (!ff_network_init())
2153 return AVERROR(EIO);
2154
6f1b7b39 2155 ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ,
ddffc2fd 2156 &s->interrupt_callback, NULL);
44594cc7
MS
2157 if (ret)
2158 goto fail;
2159
2160 while (1) {
bc371aca 2161 ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
44594cc7
MS
2162 if (ret == AVERROR(EAGAIN))
2163 continue;
2164 if (ret < 0)
2165 goto fail;
2166 if (ret < 12) {
2167 av_log(s, AV_LOG_WARNING, "Received too short packet\n");
2168 continue;
2169 }
2170
2171 if ((recvbuf[0] & 0xc0) != 0x80) {
2172 av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
2173 "received\n");
2174 continue;
2175 }
2176
298a587f 2177 if (RTP_PT_IS_RTCP(recvbuf[1]))
f3a094f2
MS
2178 continue;
2179
44594cc7
MS
2180 payload_type = recvbuf[1] & 0x7f;
2181 break;
2182 }
1869ea03 2183 getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
e52a9145 2184 ffurl_close(in);
44594cc7
MS
2185 in = NULL;
2186
44594cc7
MS
2187 if (ff_rtp_get_codec_info(&codec, payload_type)) {
2188 av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
2189 "without an SDP file describing it\n",
2190 payload_type);
2191 goto fail;
2192 }
2193 if (codec.codec_type != AVMEDIA_TYPE_DATA) {
2194 av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
2195 "properly you need an SDP file "
2196 "describing it\n");
2197 }
2198
2199 av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port,
2200 NULL, 0, s->filename);
2201
2202 snprintf(sdp, sizeof(sdp),
2203 "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
2204 addr.ss_family == AF_INET ? 4 : 6, host,
2205 codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
2206 codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio",
2207 port, payload_type);
2208 av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
2209
e731b8d8 2210 ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL);
44594cc7
MS
2211 s->pb = &pb;
2212
2213 /* sdp_read_header initializes this again */
2214 ff_network_close();
2215
30266038
MS
2216 rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1;
2217
6e9651d1 2218 ret = sdp_read_header(s);
44594cc7
MS
2219 s->pb = NULL;
2220 return ret;
2221
2222fail:
2223 if (in)
e52a9145 2224 ffurl_close(in);
44594cc7
MS
2225 ff_network_close();
2226 return ret;
2227}
2228
51369f28
MS
2229static const AVClass rtp_demuxer_class = {
2230 .class_name = "RTP demuxer",
2231 .item_name = av_default_item_name,
2232 .option = rtp_options,
2233 .version = LIBAVUTIL_VERSION_INT,
2234};
2235
c6610a21 2236AVInputFormat ff_rtp_demuxer = {
dfc2c4d9 2237 .name = "rtp",
6774247a 2238 .long_name = NULL_IF_CONFIG_SMALL("RTP input"),
dfc2c4d9
AK
2239 .priv_data_size = sizeof(RTSPState),
2240 .read_probe = rtp_probe,
2241 .read_header = rtp_read_header,
2242 .read_packet = ff_rtsp_fetch_packet,
2243 .read_close = sdp_read_close,
17934c18
MS
2244 .flags = AVFMT_NOFILE,
2245 .priv_class = &rtp_demuxer_class,
44594cc7 2246};
44b70ce5 2247#endif /* CONFIG_RTP_DEMUXER */