RTSP: Propagate errors up from ff_rtsp_send_cmd*
[libav.git] / libavformat / rtsp.c
CommitLineData
1617ad97 1/*
93ced3e8 2 * RTSP/SDP client
406792e7 3 * Copyright (c) 2002 Fabrice Bellard
1617ad97 4 *
b78e7197
DB
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg 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 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
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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
b78e7197 18 * License along with FFmpeg; 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"
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25#include "avformat.h"
26
db0ed93e 27#include <sys/time.h>
b250f9c6 28#if HAVE_SYS_SELECT_H
933bd8e2 29#include <sys/select.h>
6ad1c9c9 30#endif
ea452b54 31#include <strings.h>
e4a9e3cc 32#include "internal.h"
42572ef5 33#include "network.h"
cbfa66d0 34#include "os_support.h"
c971ff19 35#include "rtsp.h"
1617ad97 36
302879cb 37#include "rtpdec.h"
e9dea59f 38#include "rdt.h"
f65919af 39#include "rtpdec_asf.h"
4934884a 40
1617ad97 41//#define DEBUG
b6892136 42//#define DEBUG_RTP_TCP
1617ad97 43
c482500f 44#if LIBAVFORMAT_VERSION_INT < (53 << 16)
90abbdba 45int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
c482500f 46#endif
85fb7b34 47
c2bfd816 48/* Timeout values for socket select, in ms,
9cba6f5f
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49 * and read_packet(), in seconds */
50#define SELECT_TIMEOUT_MS 100
51#define READ_PACKET_TIMEOUT_S 10
52#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / SELECT_TIMEOUT_MS
53
1ef36a70 54#define SPACE_CHARS " \t\r\n"
da1e126e
RB
55/* we use memchr() instead of strchr() here because strchr() will return
56 * the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */
57#define redir_isspace(c) memchr(SPACE_CHARS, c, 4)
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58static void skip_spaces(const char **pp)
59{
60 const char *p;
61 p = *pp;
62 while (redir_isspace(*p))
63 p++;
64 *pp = p;
65}
66
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RB
67static void get_word_until_chars(char *buf, int buf_size,
68 const char *sep, const char **pp)
1617ad97
FB
69{
70 const char *p;
71 char *q;
72
73 p = *pp;
74 skip_spaces(&p);
75 q = buf;
76 while (!strchr(sep, *p) && *p != '\0') {
77 if ((q - buf) < buf_size - 1)
78 *q++ = *p;
79 p++;
80 }
81 if (buf_size > 0)
82 *q = '\0';
83 *pp = p;
84}
85
1ef36a70
RB
86static void get_word_sep(char *buf, int buf_size, const char *sep,
87 const char **pp)
1617ad97 88{
1ef36a70
RB
89 if (**pp == '/') (*pp)++;
90 get_word_until_chars(buf, buf_size, sep, pp);
91}
1617ad97 92
1ef36a70
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93static void get_word(char *buf, int buf_size, const char **pp)
94{
95 get_word_until_chars(buf, buf_size, SPACE_CHARS, pp);
1617ad97
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96}
97
c8965800 98/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
8f3c87f3
RB
99static int sdp_parse_rtpmap(AVFormatContext *s,
100 AVCodecContext *codec, RTSPStream *rtsp_st,
c8965800 101 int payload_type, const char *p)
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102{
103 char buf[256];
d1ccf0e0
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104 int i;
105 AVCodec *c;
7b49ce2e 106 const char *c_name;
93ced3e8 107
d1ccf0e0 108 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
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RB
109 * see if we can handle this kind of payload.
110 * The space should normally not be there but some Real streams or
111 * particular servers ("RealServer Version 6.1.3.970", see issue 1658)
112 * have a trailing space. */
113 get_word_sep(buf, sizeof(buf), "/ ", &p);
d1ccf0e0 114 if (payload_type >= RTP_PT_PRIVATE) {
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115 RTPDynamicProtocolHandler *handler;
116 for (handler = RTPFirstDynamicPayloadHandler;
117 handler; handler = handler->next) {
118 if (!strcasecmp(buf, handler->enc_name) &&
119 codec->codec_type == handler->codec_type) {
120 codec->codec_id = handler->codec_id;
121 rtsp_st->dynamic_handler = handler;
122 if (handler->open)
123 rtsp_st->dynamic_protocol_context = handler->open();
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RD
124 break;
125 }
4934884a 126 }
93ced3e8 127 } else {
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128 /* We are in a standard case
129 * (from http://www.iana.org/assignments/rtp-parameters). */
d1ccf0e0 130 /* search into AVRtpPayloadTypes[] */
7ed19d7f 131 codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
d1ccf0e0
RD
132 }
133
134 c = avcodec_find_decoder(codec->codec_id);
135 if (c && c->name)
7b49ce2e 136 c_name = c->name;
d1ccf0e0 137 else
170870b7 138 c_name = "(null)";
d1ccf0e0 139
7515ed0c
RB
140 get_word_sep(buf, sizeof(buf), "/", &p);
141 i = atoi(buf);
142 switch (codec->codec_type) {
72415b2a 143 case AVMEDIA_TYPE_AUDIO:
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RB
144 av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
145 codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
146 codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
147 if (i > 0) {
148 codec->sample_rate = i;
149 get_word_sep(buf, sizeof(buf), "/", &p);
150 i = atoi(buf);
151 if (i > 0)
152 codec->channels = i;
153 // TODO: there is a bug here; if it is a mono stream, and
154 // less than 22000Hz, faad upconverts to stereo and twice
155 // the frequency. No problem, but the sample rate is being
156 // set here by the sdp line. Patch on its way. (rdm)
d1ccf0e0 157 }
7515ed0c
RB
158 av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
159 codec->sample_rate);
160 av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
161 codec->channels);
162 break;
72415b2a 163 case AVMEDIA_TYPE_VIDEO:
7515ed0c
RB
164 av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
165 break;
166 default:
167 break;
168 }
169 return 0;
93ced3e8
FB
170}
171
c8965800 172/* return the length and optionally the data */
93ced3e8
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173static int hex_to_data(uint8_t *data, const char *p)
174{
175 int c, len, v;
176
177 len = 0;
178 v = 1;
c8965800 179 for (;;) {
93ced3e8 180 skip_spaces(&p);
6a8c8b36 181 if (*p == '\0')
93ced3e8 182 break;
c8965800 183 c = toupper((unsigned char) *p++);
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184 if (c >= '0' && c <= '9')
185 c = c - '0';
186 else if (c >= 'A' && c <= 'F')
187 c = c - 'A' + 10;
188 else
189 break;
190 v = (v << 4) | c;
191 if (v & 0x100) {
192 if (data)
193 data[len] = v;
194 len++;
195 v = 1;
196 }
197 }
198 return len;
199}
200
e6327fba
RB
201static void sdp_parse_fmtp_config(AVCodecContext * codec, void *ctx,
202 char *attr, char *value)
d1ccf0e0
RD
203{
204 switch (codec->codec_id) {
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205 case CODEC_ID_MPEG4:
206 case CODEC_ID_AAC:
207 if (!strcmp(attr, "config")) {
208 /* decode the hexa encoded parameter */
209 int len = hex_to_data(NULL, value);
210 if (codec->extradata)
211 av_free(codec->extradata);
212 codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
213 if (!codec->extradata)
214 return;
215 codec->extradata_size = len;
216 hex_to_data(codec->extradata, value);
217 }
218 break;
c8965800
RB
219 default:
220 break;
d1ccf0e0
RD
221 }
222 return;
223}
224
644e7acb 225typedef struct {
7b49ce2e 226 const char *str;
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227 uint16_t type;
228 uint32_t offset;
644e7acb 229} AttrNameMap;
d1ccf0e0 230
c2bfd816 231/* All known fmtp parameters and the corresponding RTPAttrTypeEnum */
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RD
232#define ATTR_NAME_TYPE_INT 0
233#define ATTR_NAME_TYPE_STR 1
644e7acb 234static const AttrNameMap attr_names[]=
d1ccf0e0 235{
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RB
236 { "SizeLength", ATTR_NAME_TYPE_INT,
237 offsetof(RTPPayloadData, sizelength) },
238 { "IndexLength", ATTR_NAME_TYPE_INT,
239 offsetof(RTPPayloadData, indexlength) },
240 { "IndexDeltaLength", ATTR_NAME_TYPE_INT,
241 offsetof(RTPPayloadData, indexdeltalength) },
242 { "profile-level-id", ATTR_NAME_TYPE_INT,
243 offsetof(RTPPayloadData, profile_level_id) },
244 { "StreamType", ATTR_NAME_TYPE_INT,
245 offsetof(RTPPayloadData, streamtype) },
246 { "mode", ATTR_NAME_TYPE_STR,
247 offsetof(RTPPayloadData, mode) },
248 { NULL, -1, -1 },
d1ccf0e0
RD
249};
250
c2bfd816 251/* parse the attribute line from the fmtp a line of an sdp response. This
c8965800
RB
252 * is broken out as a function because it is used in rtp_h264.c, which is
253 * forthcoming. */
3307e6ea 254int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size,
93993933 255 char *value, int value_size)
d0deedcb
RM
256{
257 skip_spaces(p);
c8965800 258 if (**p) {
d0deedcb
RM
259 get_word_sep(attr, attr_size, "=", p);
260 if (**p == '=')
261 (*p)++;
262 get_word_sep(value, value_size, ";", p);
263 if (**p == ';')
264 (*p)++;
265 return 1;
266 }
267 return 0;
268}
269
d1ccf0e0
RD
270/* parse a SDP line and save stream attributes */
271static void sdp_parse_fmtp(AVStream *st, const char *p)
93ced3e8
FB
272{
273 char attr[256];
373afbaf
RB
274 /* Vorbis setup headers can be up to 12KB and are sent base64
275 * encoded, giving a 12KB * (4/3) = 16KB FMTP line. */
276 char value[16384];
d1ccf0e0 277 int i;
d1ccf0e0 278 RTSPStream *rtsp_st = st->priv_data;
01f4895c 279 AVCodecContext *codec = st->codec;
be73a544 280 RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data;
93ced3e8
FB
281
282 /* loop on each attribute */
3307e6ea 283 while (ff_rtsp_next_attr_and_value(&p, attr, sizeof(attr),
93993933 284 value, sizeof(value))) {
c8965800
RB
285 /* grab the codec extra_data from the config parameter of the fmtp
286 * line */
e6327fba
RB
287 sdp_parse_fmtp_config(codec, rtsp_st->dynamic_protocol_context,
288 attr, value);
d1ccf0e0
RD
289 /* Looking for a known attribute */
290 for (i = 0; attr_names[i].str; ++i) {
291 if (!strcasecmp(attr, attr_names[i].str)) {
c8965800
RB
292 if (attr_names[i].type == ATTR_NAME_TYPE_INT) {
293 *(int *)((char *)rtp_payload_data +
294 attr_names[i].offset) = atoi(value);
295 } else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
296 *(char **)((char *)rtp_payload_data +
297 attr_names[i].offset) = av_strdup(value);
bb270c08 298 }
93ced3e8 299 }
93ced3e8
FB
300 }
301}
302
debe86bf 303/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
31693e00
RM
304 * and end time.
305 * Used for seeking in the rtp stream.
306 */
307static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
308{
309 char buf[256];
310
311 skip_spaces(&p);
f7d78f36 312 if (!av_stristart(p, "npt=", &p))
31693e00
RM
313 return;
314
315 *start = AV_NOPTS_VALUE;
316 *end = AV_NOPTS_VALUE;
317
318 get_word_sep(buf, sizeof(buf), "-", &p);
319 *start = parse_date(buf, 1);
320 if (*p == '-') {
321 p++;
322 get_word_sep(buf, sizeof(buf), "-", &p);
323 *end = parse_date(buf, 1);
324 }
325// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
326// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
327}
328
93ced3e8
FB
329typedef struct SDPParseState {
330 /* SDP only */
331 struct in_addr default_ip;
c8965800
RB
332 int default_ttl;
333 int skip_media; ///< set if an unknown m= line occurs
93ced3e8
FB
334} SDPParseState;
335
336static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
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337 int letter, const char *buf)
338{
8b1ab7bf 339 RTSPState *rt = s->priv_data;
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340 char buf1[64], st_type[64];
341 const char *p;
72415b2a 342 enum AVMediaType codec_type;
fb65d2ca 343 int payload_type, i;
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FB
344 AVStream *st;
345 RTSPStream *rtsp_st;
93ced3e8
FB
346 struct in_addr sdp_ip;
347 int ttl;
348
67c9cd69 349 dprintf(s, "sdp: %c='%s'\n", letter, buf);
1617ad97
FB
350
351 p = buf;
cb760a47
RB
352 if (s1->skip_media && letter != 'm')
353 return;
c8965800 354 switch (letter) {
93ced3e8
FB
355 case 'c':
356 get_word(buf1, sizeof(buf1), &p);
357 if (strcmp(buf1, "IN") != 0)
358 return;
359 get_word(buf1, sizeof(buf1), &p);
360 if (strcmp(buf1, "IP4") != 0)
361 return;
362 get_word_sep(buf1, sizeof(buf1), "/", &p);
ac11d562 363 if (ff_inet_aton(buf1, &sdp_ip) == 0)
93ced3e8
FB
364 return;
365 ttl = 16;
366 if (*p == '/') {
367 p++;
368 get_word_sep(buf1, sizeof(buf1), "/", &p);
369 ttl = atoi(buf1);
370 }
371 if (s->nb_streams == 0) {
372 s1->default_ip = sdp_ip;
373 s1->default_ttl = ttl;
374 } else {
375 st = s->streams[s->nb_streams - 1];
376 rtsp_st = st->priv_data;
377 rtsp_st->sdp_ip = sdp_ip;
378 rtsp_st->sdp_ttl = ttl;
379 }
380 break;
1617ad97 381 case 's':
2ef6c124 382 av_metadata_set2(&s->metadata, "title", p, 0);
1617ad97
FB
383 break;
384 case 'i':
385 if (s->nb_streams == 0) {
2ef6c124 386 av_metadata_set2(&s->metadata, "comment", p, 0);
1617ad97
FB
387 break;
388 }
389 break;
390 case 'm':
391 /* new stream */
cb760a47 392 s1->skip_media = 0;
1617ad97
FB
393 get_word(st_type, sizeof(st_type), &p);
394 if (!strcmp(st_type, "audio")) {
72415b2a 395 codec_type = AVMEDIA_TYPE_AUDIO;
1617ad97 396 } else if (!strcmp(st_type, "video")) {
72415b2a 397 codec_type = AVMEDIA_TYPE_VIDEO;
090438cc 398 } else if (!strcmp(st_type, "application")) {
72415b2a 399 codec_type = AVMEDIA_TYPE_DATA;
1617ad97 400 } else {
cb760a47 401 s1->skip_media = 1;
1617ad97
FB
402 return;
403 }
1617ad97
FB
404 rtsp_st = av_mallocz(sizeof(RTSPStream));
405 if (!rtsp_st)
406 return;
8b1ab7bf
FB
407 rtsp_st->stream_index = -1;
408 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
93ced3e8
FB
409
410 rtsp_st->sdp_ip = s1->default_ip;
411 rtsp_st->sdp_ttl = s1->default_ttl;
412
93ced3e8
FB
413 get_word(buf1, sizeof(buf1), &p); /* port */
414 rtsp_st->sdp_port = atoi(buf1);
415
416 get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
115329f1 417
93ced3e8
FB
418 /* XXX: handle list of formats */
419 get_word(buf1, sizeof(buf1), &p); /* format list */
420 rtsp_st->sdp_payload_type = atoi(buf1);
93ced3e8 421
7ed19d7f 422 if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
8b1ab7bf
FB
423 /* no corresponding stream */
424 } else {
425 st = av_new_stream(s, 0);
426 if (!st)
427 return;
428 st->priv_data = rtsp_st;
429 rtsp_st->stream_index = st->index;
01f4895c 430 st->codec->codec_type = codec_type;
d1ccf0e0 431 if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
8b1ab7bf 432 /* if standard payload type, we can find the codec right now */
bf6d9818 433 ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
8b1ab7bf
FB
434 }
435 }
1617ad97 436 /* put a default control url */
00eb13e0 437 av_strlcpy(rtsp_st->control_url, rt->control_uri,
c8965800 438 sizeof(rtsp_st->control_url));
1617ad97
FB
439 break;
440 case 'a':
00eb13e0
AS
441 if (av_strstart(p, "control:", &p)) {
442 if (s->nb_streams == 0) {
443 if (!strncmp(p, "rtsp://", 7))
444 av_strlcpy(rt->control_uri, p,
445 sizeof(rt->control_uri));
446 } else {
1617ad97
FB
447 char proto[32];
448 /* get the control url */
449 st = s->streams[s->nb_streams - 1];
450 rtsp_st = st->priv_data;
115329f1 451
1617ad97 452 /* XXX: may need to add full url resolution */
c5c6e67c 453 ff_url_split(proto, sizeof(proto), NULL, 0, NULL, 0,
f984dcf6 454 NULL, NULL, 0, p);
1617ad97
FB
455 if (proto[0] == '\0') {
456 /* relative control URL */
00eb13e0 457 if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/')
c8965800
RB
458 av_strlcat(rtsp_st->control_url, "/",
459 sizeof(rtsp_st->control_url));
460 av_strlcat(rtsp_st->control_url, p,
461 sizeof(rtsp_st->control_url));
462 } else
463 av_strlcpy(rtsp_st->control_url, p,
464 sizeof(rtsp_st->control_url));
00eb13e0 465 }
83d14c85 466 } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) {
93ced3e8 467 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
115329f1 468 get_word(buf1, sizeof(buf1), &p);
93ced3e8 469 payload_type = atoi(buf1);
83d14c85 470 st = s->streams[s->nb_streams - 1];
ff16f551 471 rtsp_st = st->priv_data;
8f3c87f3 472 sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p);
f7d78f36 473 } else if (av_strstart(p, "fmtp:", &p)) {
93ced3e8 474 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
115329f1 475 get_word(buf1, sizeof(buf1), &p);
93ced3e8 476 payload_type = atoi(buf1);
c8965800
RB
477 for (i = 0; i < s->nb_streams; i++) {
478 st = s->streams[i];
93ced3e8
FB
479 rtsp_st = st->priv_data;
480 if (rtsp_st->sdp_payload_type == payload_type) {
c8965800
RB
481 if (!(rtsp_st->dynamic_handler &&
482 rtsp_st->dynamic_handler->parse_sdp_a_line &&
483 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
484 i, rtsp_st->dynamic_protocol_context, buf)))
ed787542 485 sdp_parse_fmtp(st, p);
93ced3e8
FB
486 }
487 }
c8965800 488 } else if (av_strstart(p, "framesize:", &p)) {
d0deedcb
RM
489 // let dynamic protocol handlers have a stab at the line.
490 get_word(buf1, sizeof(buf1), &p);
491 payload_type = atoi(buf1);
c8965800
RB
492 for (i = 0; i < s->nb_streams; i++) {
493 st = s->streams[i];
d0deedcb 494 rtsp_st = st->priv_data;
c8965800
RB
495 if (rtsp_st->sdp_payload_type == payload_type &&
496 rtsp_st->dynamic_handler &&
497 rtsp_st->dynamic_handler->parse_sdp_a_line)
498 rtsp_st->dynamic_handler->parse_sdp_a_line(s, i,
499 rtsp_st->dynamic_protocol_context, buf);
d0deedcb 500 }
c8965800 501 } else if (av_strstart(p, "range:", &p)) {
31693e00
RM
502 int64_t start, end;
503
504 // this is so that seeking on a streamed file can work.
505 rtsp_parse_range_npt(p, &start, &end);
c8965800
RB
506 s->start_time = start;
507 /* AV_NOPTS_VALUE means live broadcast (and can't seek) */
508 s->duration = (end == AV_NOPTS_VALUE) ?
509 AV_NOPTS_VALUE : end - start;
119b4668
RB
510 } else if (av_strstart(p, "IsRealDataType:integer;",&p)) {
511 if (atoi(p) == 1)
512 rt->transport = RTSP_TRANSPORT_RDT;
1a30d541
RB
513 } else {
514 if (rt->server_type == RTSP_SERVER_WMS)
515 ff_wms_parse_sdp_a_line(s, p);
516 if (s->nb_streams > 0) {
c4a3d032
RB
517 if (rt->server_type == RTSP_SERVER_REAL)
518 ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
519
520 rtsp_st = s->streams[s->nb_streams - 1]->priv_data;
521 if (rtsp_st->dynamic_handler &&
522 rtsp_st->dynamic_handler->parse_sdp_a_line)
c8965800
RB
523 rtsp_st->dynamic_handler->parse_sdp_a_line(s,
524 s->nb_streams - 1,
c4a3d032 525 rtsp_st->dynamic_protocol_context, buf);
1a30d541 526 }
1617ad97
FB
527 }
528 break;
529 }
530}
531
5c91a675 532static int sdp_parse(AVFormatContext *s, const char *content)
1617ad97
FB
533{
534 const char *p;
535 int letter;
9211bcdd
RB
536 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
537 * contain long SDP lines containing complete ASF Headers (several
538 * kB) or arrays of MDPR (RM stream descriptor) headers plus
539 * "rulebooks" describing their properties. Therefore, the SDP line
373afbaf
RB
540 * buffer is large.
541 *
542 * The Vorbis FMTP line can be up to 16KB - see sdp_parse_fmtp. */
543 char buf[16384], *q;
93ced3e8 544 SDPParseState sdp_parse_state, *s1 = &sdp_parse_state;
115329f1 545
93ced3e8 546 memset(s1, 0, sizeof(SDPParseState));
1617ad97 547 p = content;
c8965800 548 for (;;) {
1617ad97
FB
549 skip_spaces(&p);
550 letter = *p;
551 if (letter == '\0')
552 break;
553 p++;
554 if (*p != '=')
555 goto next_line;
556 p++;
557 /* get the content */
558 q = buf;
b6892136 559 while (*p != '\n' && *p != '\r' && *p != '\0') {
1617ad97
FB
560 if ((q - buf) < sizeof(buf) - 1)
561 *q++ = *p;
562 p++;
563 }
564 *q = '\0';
93ced3e8 565 sdp_parse_line(s, s1, letter, buf);
1617ad97
FB
566 next_line:
567 while (*p != '\n' && *p != '\0')
568 p++;
569 if (*p == '\n')
570 p++;
571 }
572 return 0;
573}
574
1ced9da3 575/* close and free RTSP streams */
3307e6ea 576void ff_rtsp_close_streams(AVFormatContext *s)
1ced9da3 577{
52aa4338 578 RTSPState *rt = s->priv_data;
1ced9da3
LA
579 int i;
580 RTSPStream *rtsp_st;
581
c8965800 582 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1ced9da3
LA
583 rtsp_st = rt->rtsp_streams[i];
584 if (rtsp_st) {
585 if (rtsp_st->transport_priv) {
fd450a51
MS
586 if (s->oformat) {
587 AVFormatContext *rtpctx = rtsp_st->transport_priv;
588 av_write_trailer(rtpctx);
b7dc88fc
MS
589 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
590 uint8_t *ptr;
591 url_close_dyn_buf(rtpctx->pb, &ptr);
592 av_free(ptr);
593 } else {
685e76b5 594 url_fclose(rtpctx->pb);
b7dc88fc 595 }
f86f6656
MS
596 av_metadata_free(&rtpctx->streams[0]->metadata);
597 av_metadata_free(&rtpctx->metadata);
fd450a51
MS
598 av_free(rtpctx->streams[0]);
599 av_free(rtpctx);
600 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
601 ff_rdt_parse_close(rtsp_st->transport_priv);
602 else
603 rtp_parse_close(rtsp_st->transport_priv);
604 }
605 if (rtsp_st->rtp_handle)
606 url_close(rtsp_st->rtp_handle);
607 if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
c8965800
RB
608 rtsp_st->dynamic_handler->close(
609 rtsp_st->dynamic_protocol_context);
1ced9da3
LA
610 }
611 }
612 av_free(rt->rtsp_streams);
613 if (rt->asf_ctx) {
614 av_close_input_stream (rt->asf_ctx);
615 rt->asf_ctx = NULL;
616 }
1ced9da3
LA
617}
618
5c7fd910
MS
619static void *rtsp_rtp_mux_open(AVFormatContext *s, AVStream *st,
620 URLContext *handle)
621{
c07c6f81 622 RTSPState *rt = s->priv_data;
fd450a51
MS
623 AVFormatContext *rtpctx;
624 int ret;
625 AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
626
627 if (!rtp_format)
628 return NULL;
629
630 /* Allocate an AVFormatContext for each output stream */
631 rtpctx = avformat_alloc_context();
632 if (!rtpctx)
633 return NULL;
634
635 rtpctx->oformat = rtp_format;
636 if (!av_new_stream(rtpctx, 0)) {
637 av_free(rtpctx);
638 return NULL;
639 }
640 /* Copy the max delay setting; the rtp muxer reads this. */
641 rtpctx->max_delay = s->max_delay;
642 /* Copy other stream parameters. */
643 rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
644
c07c6f81
MS
645 /* Set the synchronized start time. */
646 rtpctx->start_time_realtime = rt->start_time;
647
fd450a51
MS
648 /* Remove the local codec, link to the original codec
649 * context instead, to give the rtp muxer access to
650 * codec parameters. */
651 av_free(rtpctx->streams[0]->codec);
652 rtpctx->streams[0]->codec = st->codec;
653
b7dc88fc 654 if (handle) {
685e76b5 655 url_fdopen(&rtpctx->pb, handle);
b7dc88fc
MS
656 } else
657 url_open_dyn_packet_buf(&rtpctx->pb, RTSP_TCP_MAX_PACKET_SIZE);
fd450a51
MS
658 ret = av_write_header(rtpctx);
659
660 if (ret) {
b7dc88fc 661 if (handle) {
685e76b5 662 url_fclose(rtpctx->pb);
b7dc88fc
MS
663 } else {
664 uint8_t *ptr;
665 url_close_dyn_buf(rtpctx->pb, &ptr);
666 av_free(ptr);
667 }
fd450a51
MS
668 av_free(rtpctx->streams[0]);
669 av_free(rtpctx);
670 return NULL;
671 }
672
673 /* Copy the RTP AVStream timebase back to the original AVStream */
674 st->time_base = rtpctx->streams[0]->time_base;
675 return rtpctx;
676}
677
c8965800 678static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
1ced9da3
LA
679{
680 RTSPState *rt = s->priv_data;
681 AVStream *st = NULL;
682
683 /* open the RTP context */
684 if (rtsp_st->stream_index >= 0)
685 st = s->streams[rtsp_st->stream_index];
686 if (!st)
687 s->ctx_flags |= AVFMTCTX_NOHEADER;
688
fd450a51
MS
689 if (s->oformat) {
690 rtsp_st->transport_priv = rtsp_rtp_mux_open(s, st, rtsp_st->rtp_handle);
c2bfd816 691 /* Ownership of rtp_handle is passed to the rtp mux context */
fd450a51
MS
692 rtsp_st->rtp_handle = NULL;
693 } else if (rt->transport == RTSP_TRANSPORT_RDT)
1ced9da3
LA
694 rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
695 rtsp_st->dynamic_protocol_context,
696 rtsp_st->dynamic_handler);
697 else
698 rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
699 rtsp_st->sdp_payload_type,
700 &rtsp_st->rtp_payload_data);
701
702 if (!rtsp_st->transport_priv) {
703 return AVERROR(ENOMEM);
704 } else if (rt->transport != RTSP_TRANSPORT_RDT) {
c8965800 705 if (rtsp_st->dynamic_handler) {
1ced9da3
LA
706 rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
707 rtsp_st->dynamic_protocol_context,
708 rtsp_st->dynamic_handler);
709 }
710 }
711
712 return 0;
713}
714
6f5a3d0a 715#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
1ced9da3
LA
716static int rtsp_probe(AVProbeData *p)
717{
718 if (av_strstart(p->filename, "rtsp:", NULL))
719 return AVPROBE_SCORE_MAX;
720 return 0;
721}
722
1617ad97
FB
723static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
724{
725 const char *p;
726 int v;
727
728 p = *pp;
729 skip_spaces(&p);
730 v = strtol(p, (char **)&p, 10);
731 if (*p == '-') {
732 p++;
733 *min_ptr = v;
734 v = strtol(p, (char **)&p, 10);
735 *max_ptr = v;
736 } else {
737 *min_ptr = v;
738 *max_ptr = v;
739 }
740 *pp = p;
741}
742
743/* XXX: only one transport specification is parsed */
a9e534d5 744static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
1617ad97
FB
745{
746 char transport_protocol[16];
747 char profile[16];
748 char lower_transport[16];
749 char parameter[16];
750 RTSPTransportField *th;
751 char buf[256];
115329f1 752
1617ad97 753 reply->nb_transports = 0;
115329f1 754
c8965800 755 for (;;) {
1617ad97
FB
756 skip_spaces(&p);
757 if (*p == '\0')
758 break;
759
760 th = &reply->transports[reply->nb_transports];
761
115329f1 762 get_word_sep(transport_protocol, sizeof(transport_protocol),
1617ad97 763 "/", &p);
e1502118 764 if (!strcasecmp (transport_protocol, "rtp")) {
7ecc634e
LB
765 get_word_sep(profile, sizeof(profile), "/;,", &p);
766 lower_transport[0] = '\0';
767 /* rtp/avp/<protocol> */
768 if (*p == '/') {
7ecc634e
LB
769 get_word_sep(lower_transport, sizeof(lower_transport),
770 ";,", &p);
119b4668
RB
771 }
772 th->transport = RTSP_TRANSPORT_RTP;
773 } else if (!strcasecmp (transport_protocol, "x-pn-tng") ||
774 !strcasecmp (transport_protocol, "x-real-rdt")) {
7ecc634e 775 /* x-pn-tng/<protocol> */
e1502118
LB
776 get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
777 profile[0] = '\0';
119b4668 778 th->transport = RTSP_TRANSPORT_RDT;
1617ad97 779 }
b6892136 780 if (!strcasecmp(lower_transport, "TCP"))
90abbdba 781 th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
1617ad97 782 else
90abbdba 783 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP;
115329f1 784
1617ad97
FB
785 if (*p == ';')
786 p++;
787 /* get each parameter */
788 while (*p != '\0' && *p != ',') {
789 get_word_sep(parameter, sizeof(parameter), "=;,", &p);
790 if (!strcmp(parameter, "port")) {
791 if (*p == '=') {
792 p++;
793 rtsp_parse_range(&th->port_min, &th->port_max, &p);
794 }
795 } else if (!strcmp(parameter, "client_port")) {
796 if (*p == '=') {
797 p++;
115329f1 798 rtsp_parse_range(&th->client_port_min,
1617ad97
FB
799 &th->client_port_max, &p);
800 }
801 } else if (!strcmp(parameter, "server_port")) {
802 if (*p == '=') {
803 p++;
115329f1 804 rtsp_parse_range(&th->server_port_min,
1617ad97
FB
805 &th->server_port_max, &p);
806 }
807 } else if (!strcmp(parameter, "interleaved")) {
808 if (*p == '=') {
809 p++;
115329f1 810 rtsp_parse_range(&th->interleaved_min,
1617ad97
FB
811 &th->interleaved_max, &p);
812 }
813 } else if (!strcmp(parameter, "multicast")) {
90abbdba
RB
814 if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
815 th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST;
1617ad97
FB
816 } else if (!strcmp(parameter, "ttl")) {
817 if (*p == '=') {
818 p++;
819 th->ttl = strtol(p, (char **)&p, 10);
820 }
821 } else if (!strcmp(parameter, "destination")) {
822 struct in_addr ipaddr;
823
824 if (*p == '=') {
825 p++;
826 get_word_sep(buf, sizeof(buf), ";,", &p);
ac11d562 827 if (ff_inet_aton(buf, &ipaddr))
1617ad97
FB
828 th->destination = ntohl(ipaddr.s_addr);
829 }
830 }
831 while (*p != ';' && *p != '\0' && *p != ',')
832 p++;
833 if (*p == ';')
834 p++;
835 }
836 if (*p == ',')
837 p++;
838
839 reply->nb_transports++;
840 }
841}
842
2626308a
MS
843void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
844 HTTPAuthState *auth_state)
1617ad97
FB
845{
846 const char *p;
847
848 /* NOTE: we do case independent match for broken servers */
849 p = buf;
f7d78f36 850 if (av_stristart(p, "Session:", &p)) {
30e79845 851 int t;
1617ad97 852 get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p);
30e79845
RB
853 if (av_stristart(p, ";timeout=", &p) &&
854 (t = strtol(p, NULL, 10)) > 0) {
855 reply->timeout = t;
856 }
f7d78f36 857 } else if (av_stristart(p, "Content-Length:", &p)) {
1617ad97 858 reply->content_length = strtol(p, NULL, 10);
f7d78f36 859 } else if (av_stristart(p, "Transport:", &p)) {
1617ad97 860 rtsp_parse_transport(reply, p);
f7d78f36 861 } else if (av_stristart(p, "CSeq:", &p)) {
1617ad97 862 reply->seq = strtol(p, NULL, 10);
f7d78f36 863 } else if (av_stristart(p, "Range:", &p)) {
31693e00 864 rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end);
30aa6aed
RB
865 } else if (av_stristart(p, "RealChallenge1:", &p)) {
866 skip_spaces(&p);
867 av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
7a86bafa
RB
868 } else if (av_stristart(p, "Server:", &p)) {
869 skip_spaces(&p);
870 av_strlcpy(reply->server, p, sizeof(reply->server));
fccb1770
RB
871 } else if (av_stristart(p, "Notice:", &p) ||
872 av_stristart(p, "X-Notice:", &p)) {
873 reply->notice = strtol(p, NULL, 10);
d243ba30
LB
874 } else if (av_stristart(p, "Location:", &p)) {
875 skip_spaces(&p);
876 av_strlcpy(reply->location, p , sizeof(reply->location));
2626308a
MS
877 } else if (av_stristart(p, "WWW-Authenticate:", &p) && auth_state) {
878 skip_spaces(&p);
879 ff_http_auth_handle_header(auth_state, "WWW-Authenticate", p);
880 } else if (av_stristart(p, "Authentication-Info:", &p) && auth_state) {
881 skip_spaces(&p);
882 ff_http_auth_handle_header(auth_state, "Authentication-Info", p);
1617ad97
FB
883 }
884}
885
b7b8fc34 886/* skip a RTP/TCP interleaved packet */
ec55edba 887void ff_rtsp_skip_packet(AVFormatContext *s)
b7b8fc34
FB
888{
889 RTSPState *rt = s->priv_data;
890 int ret, len, len1;
891 uint8_t buf[1024];
892
0e848977 893 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b7b8fc34
FB
894 if (ret != 3)
895 return;
80fb8234 896 len = AV_RB16(buf + 1);
67c9cd69
BC
897
898 dprintf(s, "skipping RTP packet len=%d\n", len);
899
b7b8fc34
FB
900 /* skip payload */
901 while (len > 0) {
902 len1 = len;
903 if (len1 > sizeof(buf))
904 len1 = sizeof(buf);
0e848977 905 ret = url_read_complete(rt->rtsp_hd, buf, len1);
b7b8fc34
FB
906 if (ret != len1)
907 return;
908 len -= len1;
909 }
910}
1617ad97 911
3307e6ea 912int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
93993933
MS
913 unsigned char **content_ptr,
914 int return_on_interleaved_data)
1617ad97
FB
915{
916 RTSPState *rt = s->priv_data;
917 char buf[4096], buf1[1024], *q;
918 unsigned char ch;
919 const char *p;
7e726132 920 int ret, content_length, line_count = 0;
1617ad97
FB
921 unsigned char *content = NULL;
922
d541a7d2 923 memset(reply, 0, sizeof(*reply));
1617ad97 924
1617ad97 925 /* parse reply (XXX: use buffers) */
1617ad97 926 rt->last_reply[0] = '\0';
c8965800 927 for (;;) {
1617ad97 928 q = buf;
c8965800 929 for (;;) {
0e848977 930 ret = url_read_complete(rt->rtsp_hd, &ch, 1);
7e726132 931#ifdef DEBUG_RTP_TCP
67c9cd69 932 dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
7e726132
RB
933#endif
934 if (ret != 1)
935 return -1;
1617ad97
FB
936 if (ch == '\n')
937 break;
b7b8fc34
FB
938 if (ch == '$') {
939 /* XXX: only parse it if first char on line ? */
7e726132
RB
940 if (return_on_interleaved_data) {
941 return 1;
942 } else
ec55edba 943 ff_rtsp_skip_packet(s);
b7b8fc34 944 } else if (ch != '\r') {
1617ad97
FB
945 if ((q - buf) < sizeof(buf) - 1)
946 *q++ = ch;
947 }
948 }
949 *q = '\0';
67c9cd69
BC
950
951 dprintf(s, "line='%s'\n", buf);
952
1617ad97
FB
953 /* test if last line */
954 if (buf[0] == '\0')
955 break;
956 p = buf;
957 if (line_count == 0) {
958 /* get reply code */
959 get_word(buf1, sizeof(buf1), &p);
960 get_word(buf1, sizeof(buf1), &p);
961 reply->status_code = atoi(buf1);
962 } else {
2626308a 963 ff_rtsp_parse_line(reply, p, &rt->auth_state);
75e61b0e
MR
964 av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
965 av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply));
1617ad97
FB
966 }
967 line_count++;
968 }
115329f1 969
1617ad97 970 if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0')
75e61b0e 971 av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
115329f1 972
1617ad97
FB
973 content_length = reply->content_length;
974 if (content_length > 0) {
975 /* leave some room for a trailing '\0' (useful for simple parsing) */
976 content = av_malloc(content_length + 1);
0e848977 977 (void)url_read_complete(rt->rtsp_hd, content, content_length);
1617ad97
FB
978 content[content_length] = '\0';
979 }
980 if (content_ptr)
981 *content_ptr = content;
e2e2e7dd
AB
982 else
983 av_free(content);
7e726132 984
7ed8211b
LB
985 if (rt->seq != reply->seq) {
986 av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
987 rt->seq, reply->seq);
988 }
989
fccb1770
RB
990 /* EOS */
991 if (reply->notice == 2101 /* End-of-Stream Reached */ ||
992 reply->notice == 2104 /* Start-of-Stream Reached */ ||
c8965800 993 reply->notice == 2306 /* Continuous Feed Terminated */) {
fccb1770 994 rt->state = RTSP_STATE_IDLE;
c8965800 995 } else if (reply->notice >= 4400 && reply->notice < 5500) {
fccb1770 996 return AVERROR(EIO); /* data or server error */
c8965800 997 } else if (reply->notice == 2401 /* Ticket Expired */ ||
fccb1770
RB
998 (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ )
999 return AVERROR(EPERM);
1000
7e726132 1001 return 0;
1617ad97
FB
1002}
1003
d0382374 1004int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s,
b17d11c6
MS
1005 const char *method, const char *url,
1006 const char *headers,
93993933
MS
1007 const unsigned char *send_content,
1008 int send_content_length)
29b9f58b
RB
1009{
1010 RTSPState *rt = s->priv_data;
7b4a3645 1011 char buf[4096];
29b9f58b
RB
1012
1013 rt->seq++;
b17d11c6
MS
1014 snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url);
1015 if (headers)
1016 av_strlcat(buf, headers, sizeof(buf));
7b4a3645 1017 av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq);
b17d11c6
MS
1018 if (rt->session_id[0] != '\0' && (!headers ||
1019 !strstr(headers, "\nIf-Match:"))) {
7b4a3645 1020 av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id);
29b9f58b 1021 }
aa8bf2fb
MS
1022 if (rt->auth[0]) {
1023 char *str = ff_http_auth_create_response(&rt->auth_state,
1024 rt->auth, url, method);
1025 if (str)
1026 av_strlcat(buf, str, sizeof(buf));
1027 av_free(str);
1028 }
dfd017bf
MS
1029 if (send_content_length > 0 && send_content)
1030 av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length);
29b9f58b 1031 av_strlcat(buf, "\r\n", sizeof(buf));
67c9cd69
BC
1032
1033 dprintf(s, "Sending:\n%s--\n", buf);
1034
b8c2c41d 1035 url_write(rt->rtsp_hd_out, buf, strlen(buf));
dfd017bf 1036 if (send_content_length > 0 && send_content)
b8c2c41d 1037 url_write(rt->rtsp_hd_out, send_content, send_content_length);
30e79845 1038 rt->last_cmd_time = av_gettime();
d0382374
JA
1039
1040 return 0;
30e79845
RB
1041}
1042
d0382374 1043int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method,
b17d11c6 1044 const char *url, const char *headers)
dfd017bf 1045{
d0382374 1046 return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0);
dfd017bf
MS
1047}
1048
d0382374 1049int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url,
b17d11c6 1050 const char *headers, RTSPMessageHeader *reply,
93993933 1051 unsigned char **content_ptr)
30e79845 1052{
d0382374 1053 return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
b17d11c6 1054 content_ptr, NULL, 0);
29b9f58b
RB
1055}
1056
d0382374 1057int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
b17d11c6
MS
1058 const char *method, const char *url,
1059 const char *header,
e9fea405
MS
1060 RTSPMessageHeader *reply,
1061 unsigned char **content_ptr,
1062 const unsigned char *send_content,
1063 int send_content_length)
dfd017bf 1064{
30af0779
MS
1065 RTSPState *rt = s->priv_data;
1066 HTTPAuthType cur_auth_type;
d0382374 1067 int ret;
30af0779
MS
1068
1069retry:
1070 cur_auth_type = rt->auth_state.auth_type;
d0382374
JA
1071 if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
1072 send_content, send_content_length)))
1073 return ret;
dfd017bf 1074
d0382374
JA
1075 if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0) ) < 0)
1076 return ret;
30af0779
MS
1077
1078 if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE &&
1079 rt->auth_state.auth_type != HTTP_AUTH_NONE)
1080 goto retry;
d0382374
JA
1081
1082 return 0;
dfd017bf
MS
1083}
1084
53620bba 1085/**
32e543f8 1086 * @return 0 on success, <0 on error, 1 if protocol is unavailable.
53620bba 1087 */
c8965800
RB
1088static int make_setup_request(AVFormatContext *s, const char *host, int port,
1089 int lower_transport, const char *real_challenge)
1617ad97
FB
1090{
1091 RTSPState *rt = s->priv_data;
f830c9a4 1092 int rtx, j, i, err, interleave = 0;
1617ad97 1093 RTSPStream *rtsp_st;
a9e534d5 1094 RTSPMessageHeader reply1, *reply = &reply1;
53620bba 1095 char cmd[2048];
e9dea59f
RB
1096 const char *trans_pref;
1097
119b4668 1098 if (rt->transport == RTSP_TRANSPORT_RDT)
e9dea59f
RB
1099 trans_pref = "x-pn-tng";
1100 else
1101 trans_pref = "RTP/AVP";
115329f1 1102
30e79845
RB
1103 /* default timeout: 1 minute */
1104 rt->timeout = 60;
1105
1617ad97
FB
1106 /* for each stream, make the setup request */
1107 /* XXX: we assume the same server is used for the control of each
c8965800 1108 * RTSP stream */
d1ccf0e0 1109
c8965800 1110 for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) {
1617ad97
FB
1111 char transport[2048];
1112
f830c9a4
RB
1113 /**
1114 * WMS serves all UDP data over a single connection, the RTX, which
1115 * isn't necessarily the first in the SDP but has to be the first
1116 * to be set up, else the second/third SETUP will fail with a 461.
1117 */
1118 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
1119 rt->server_type == RTSP_SERVER_WMS) {
1120 if (i == 0) {
1121 /* rtx first */
1122 for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) {
1123 int len = strlen(rt->rtsp_streams[rtx]->control_url);
1124 if (len >= 4 &&
c8965800
RB
1125 !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
1126 "/rtx"))
f830c9a4
RB
1127 break;
1128 }
1129 if (rtx == rt->nb_rtsp_streams)
1130 return -1; /* no RTX found */
1131 rtsp_st = rt->rtsp_streams[rtx];
1132 } else
1133 rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
1134 } else
2fea9650 1135 rtsp_st = rt->rtsp_streams[i];
1617ad97 1136
1617ad97 1137 /* RTP/UDP */
90abbdba 1138 if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
85fb7b34 1139 char buf[256];
85fb7b34 1140
f830c9a4
RB
1141 if (rt->server_type == RTSP_SERVER_WMS && i > 1) {
1142 port = reply->transports[0].client_port_min;
1143 goto have_port;
1144 }
1145
85fb7b34 1146 /* first try in specified port range */
d1ccf0e0 1147 if (RTSP_RTP_PORT_MIN != 0) {
c8965800 1148 while (j <= RTSP_RTP_PORT_MAX) {
57b5555c
MS
1149 ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1,
1150 "?localport=%d", j);
c8965800
RB
1151 /* we will use two ports per rtp stream (rtp and rtcp) */
1152 j += 2;
1153 if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0)
85fb7b34
FB
1154 goto rtp_opened;
1155 }
1617ad97 1156 }
85fb7b34 1157
c8965800
RB
1158#if 0
1159 /* then try on any port */
1160 if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1161 err = AVERROR_INVALIDDATA;
1162 goto fail;
1163 }
1164#endif
85fb7b34
FB
1165
1166 rtp_opened:
8b1ab7bf 1167 port = rtp_get_local_port(rtsp_st->rtp_handle);
f830c9a4 1168 have_port:
0ad306bc 1169 snprintf(transport, sizeof(transport) - 1,
eee2cbff
RB
1170 "%s/UDP;", trans_pref);
1171 if (rt->server_type != RTSP_SERVER_REAL)
1172 av_strlcat(transport, "unicast;", sizeof(transport));
1173 av_strlcatf(transport, sizeof(transport),
1174 "client_port=%d", port);
f830c9a4
RB
1175 if (rt->transport == RTSP_TRANSPORT_RTP &&
1176 !(rt->server_type == RTSP_SERVER_WMS && i > 0))
e9dea59f 1177 av_strlcatf(transport, sizeof(transport), "-%d", port + 1);
1617ad97
FB
1178 }
1179
1180 /* RTP/TCP */
90abbdba 1181 else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
090438cc
RB
1182 /** For WMS streams, the application streams are only used for
1183 * UDP. When trying to set it up for TCP streams, the server
1184 * will return an error. Therefore, we skip those streams. */
1185 if (rt->server_type == RTSP_SERVER_WMS &&
c8965800 1186 s->streams[rtsp_st->stream_index]->codec->codec_type ==
72415b2a 1187 AVMEDIA_TYPE_DATA)
090438cc 1188 continue;
0ad306bc 1189 snprintf(transport, sizeof(transport) - 1,
d1c6e47c
RB
1190 "%s/TCP;", trans_pref);
1191 if (rt->server_type == RTSP_SERVER_WMS)
1192 av_strlcat(transport, "unicast;", sizeof(transport));
1193 av_strlcatf(transport, sizeof(transport),
1194 "interleaved=%d-%d",
1195 interleave, interleave + 1);
1196 interleave += 2;
1617ad97
FB
1197 }
1198
90abbdba 1199 else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) {
0ad306bc 1200 snprintf(transport, sizeof(transport) - 1,
e9dea59f 1201 "%s/UDP;multicast", trans_pref);
1617ad97 1202 }
69adcc4f
MS
1203 if (s->oformat) {
1204 av_strlcat(transport, ";mode=receive", sizeof(transport));
1205 } else if (rt->server_type == RTSP_SERVER_REAL ||
2efc97c2 1206 rt->server_type == RTSP_SERVER_WMS)
e9dea59f 1207 av_strlcat(transport, ";mode=play", sizeof(transport));
115329f1 1208 snprintf(cmd, sizeof(cmd),
b6892136 1209 "Transport: %s\r\n",
b17d11c6 1210 transport);
2e889ae4 1211 if (i == 0 && rt->server_type == RTSP_SERVER_REAL) {
e9dea59f
RB
1212 char real_res[41], real_csum[9];
1213 ff_rdt_calc_response_and_checksum(real_res, real_csum,
1214 real_challenge);
1215 av_strlcatf(cmd, sizeof(cmd),
1216 "If-Match: %s\r\n"
1217 "RealChallenge2: %s, sd=%s\r\n",
1218 rt->session_id, real_res, real_csum);
1219 }
b17d11c6 1220 ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL);
8a8754d8
RB
1221 if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) {
1222 err = 1;
1223 goto fail;
7e6ca34f
RB
1224 } else if (reply->status_code != RTSP_STATUS_OK ||
1225 reply->nb_transports != 1) {
1617ad97
FB
1226 err = AVERROR_INVALIDDATA;
1227 goto fail;
1228 }
1229
1230 /* XXX: same protocol for all streams is required */
1231 if (i > 0) {
119b4668
RB
1232 if (reply->transports[0].lower_transport != rt->lower_transport ||
1233 reply->transports[0].transport != rt->transport) {
1617ad97
FB
1234 err = AVERROR_INVALIDDATA;
1235 goto fail;
1236 }
1237 } else {
90abbdba 1238 rt->lower_transport = reply->transports[0].lower_transport;
119b4668 1239 rt->transport = reply->transports[0].transport;
1617ad97
FB
1240 }
1241
1242 /* close RTP connection if not choosen */
90abbdba
RB
1243 if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP &&
1244 (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) {
8b1ab7bf
FB
1245 url_close(rtsp_st->rtp_handle);
1246 rtsp_st->rtp_handle = NULL;
1617ad97
FB
1247 }
1248
90abbdba
RB
1249 switch(reply->transports[0].lower_transport) {
1250 case RTSP_LOWER_TRANSPORT_TCP:
1617ad97
FB
1251 rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
1252 rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
1253 break;
115329f1 1254
c8965800
RB
1255 case RTSP_LOWER_TRANSPORT_UDP: {
1256 char url[1024];
1257
1258 /* XXX: also use address if specified */
57b5555c
MS
1259 ff_url_join(url, sizeof(url), "rtp", NULL, host,
1260 reply->transports[0].server_port_min, NULL);
c8965800
RB
1261 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) &&
1262 rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
1263 err = AVERROR_INVALIDDATA;
1264 goto fail;
1617ad97 1265 }
9c8fa20d
MS
1266 /* Try to initialize the connection state in a
1267 * potential NAT router by sending dummy packets.
1268 * RTP/RTCP dummy packets are used for RDT, too.
1269 */
30ff7c5c 1270 if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat)
9c8fa20d 1271 rtp_send_punch_packets(rtsp_st->rtp_handle);
1617ad97 1272 break;
c8965800
RB
1273 }
1274 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
1275 char url[1024];
1276 struct in_addr in;
1277 int port, ttl;
1278
1279 if (reply->transports[0].destination) {
1280 in.s_addr = htonl(reply->transports[0].destination);
1281 port = reply->transports[0].port_min;
1282 ttl = reply->transports[0].ttl;
1283 } else {
1284 in = rtsp_st->sdp_ip;
1285 port = rtsp_st->sdp_port;
1286 ttl = rtsp_st->sdp_ttl;
1287 }
57b5555c
MS
1288 ff_url_join(url, sizeof(url), "rtp", NULL, inet_ntoa(in),
1289 port, "?ttl=%d", ttl);
c8965800
RB
1290 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
1291 err = AVERROR_INVALIDDATA;
1292 goto fail;
1617ad97
FB
1293 }
1294 break;
1295 }
c8965800 1296 }
d1ccf0e0 1297
ee0cb67f 1298 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 1299 goto fail;
1617ad97
FB
1300 }
1301
30e79845
RB
1302 if (reply->timeout > 0)
1303 rt->timeout = reply->timeout;
1304
2e889ae4 1305 if (rt->server_type == RTSP_SERVER_REAL)
1256d16b
RB
1306 rt->need_subscription = 1;
1307
53620bba
RB
1308 return 0;
1309
1310fail:
c8965800 1311 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8a8754d8
RB
1312 if (rt->rtsp_streams[i]->rtp_handle) {
1313 url_close(rt->rtsp_streams[i]->rtp_handle);
1314 rt->rtsp_streams[i]->rtp_handle = NULL;
1315 }
1316 }
53620bba
RB
1317 return err;
1318}
1319
1ced9da3
LA
1320static int rtsp_read_play(AVFormatContext *s)
1321{
1322 RTSPState *rt = s->priv_data;
1323 RTSPMessageHeader reply1, *reply = &reply1;
5948f822 1324 int i;
1ced9da3
LA
1325 char cmd[1024];
1326
1327 av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
1328
1329 if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
1330 if (rt->state == RTSP_STATE_PAUSED) {
b17d11c6 1331 cmd[0] = 0;
1ced9da3
LA
1332 } else {
1333 snprintf(cmd, sizeof(cmd),
1ced9da3 1334 "Range: npt=%0.3f-\r\n",
1ced9da3
LA
1335 (double)rt->seek_timestamp / AV_TIME_BASE);
1336 }
b17d11c6 1337 ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
1ced9da3
LA
1338 if (reply->status_code != RTSP_STATUS_OK) {
1339 return -1;
1340 }
5948f822
MS
1341 if (reply->range_start != AV_NOPTS_VALUE &&
1342 rt->transport == RTSP_TRANSPORT_RTP) {
1343 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1344 RTSPStream *rtsp_st = rt->rtsp_streams[i];
1345 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1346 AVStream *st = NULL;
8d168a92
MS
1347 if (!rtpctx)
1348 continue;
5948f822
MS
1349 if (rtsp_st->stream_index >= 0)
1350 st = s->streams[rtsp_st->stream_index];
1351 rtpctx->last_rtcp_ntp_time = AV_NOPTS_VALUE;
1352 rtpctx->first_rtcp_ntp_time = AV_NOPTS_VALUE;
1353 if (st)
1354 rtpctx->range_start_offset = av_rescale_q(reply->range_start,
1355 AV_TIME_BASE_Q,
1356 st->time_base);
1357 }
1358 }
1ced9da3 1359 }
c02fd3d2 1360 rt->state = RTSP_STATE_STREAMING;
1ced9da3
LA
1361 return 0;
1362}
1363
6e69f6c4 1364static int rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
e23d195d
MS
1365{
1366 RTSPState *rt = s->priv_data;
e23d195d
MS
1367 char cmd[1024];
1368 unsigned char *content = NULL;
1369 int ret;
1370
1371 /* describe the stream */
1372 snprintf(cmd, sizeof(cmd),
b17d11c6 1373 "Accept: application/sdp\r\n");
e23d195d
MS
1374 if (rt->server_type == RTSP_SERVER_REAL) {
1375 /**
1376 * The Require: attribute is needed for proper streaming from
1377 * Realmedia servers.
1378 */
1379 av_strlcat(cmd,
1380 "Require: com.real.retain-entity-for-setup\r\n",
1381 sizeof(cmd));
1382 }
b17d11c6 1383 ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
e23d195d
MS
1384 if (!content)
1385 return AVERROR_INVALIDDATA;
1386 if (reply->status_code != RTSP_STATUS_OK) {
1387 av_freep(&content);
1388 return AVERROR_INVALIDDATA;
1389 }
1390
1391 /* now we got the SDP description, we parse it */
1392 ret = sdp_parse(s, (const char *)content);
1393 av_freep(&content);
1394 if (ret < 0)
1395 return AVERROR_INVALIDDATA;
1396
1397 return 0;
1398}
1399
26cb700c 1400static int rtsp_setup_output_streams(AVFormatContext *s, const char *addr)
3e24c770
MS
1401{
1402 RTSPState *rt = s->priv_data;
1403 RTSPMessageHeader reply1, *reply = &reply1;
3e24c770
MS
1404 int i;
1405 char *sdp;
26cb700c 1406 AVFormatContext sdp_ctx, *ctx_array[1];
c07c6f81
MS
1407
1408 rt->start_time = av_gettime();
3e24c770
MS
1409
1410 /* Announce the stream */
3e24c770
MS
1411 sdp = av_mallocz(8192);
1412 if (sdp == NULL)
1413 return AVERROR(ENOMEM);
26cb700c
MS
1414 /* We create the SDP based on the RTSP AVFormatContext where we
1415 * aren't allowed to change the filename field. (We create the SDP
1416 * based on the RTSP context since the contexts for the RTP streams
1417 * don't exist yet.) In order to specify a custom URL with the actual
1418 * peer IP instead of the originally specified hostname, we create
1419 * a temporary copy of the AVFormatContext, where the custom URL is set.
1420 *
1421 * FIXME: Create the SDP without copying the AVFormatContext.
1422 * This either requires setting up the RTP stream AVFormatContexts
1423 * already here (complicating things immensely) or getting a more
1424 * flexible SDP creation interface.
1425 */
1426 sdp_ctx = *s;
1427 ff_url_join(sdp_ctx.filename, sizeof(sdp_ctx.filename),
1428 "rtsp", NULL, addr, -1, NULL);
1429 ctx_array[0] = &sdp_ctx;
1430 if (avf_sdp_create(ctx_array, 1, sdp, 8192)) {
3e24c770
MS
1431 av_free(sdp);
1432 return AVERROR_INVALIDDATA;
1433 }
1434 av_log(s, AV_LOG_INFO, "SDP:\n%s\n", sdp);
b17d11c6
MS
1435 ff_rtsp_send_cmd_with_content(s, "ANNOUNCE", rt->control_uri,
1436 "Content-Type: application/sdp\r\n",
1437 reply, NULL, sdp, strlen(sdp));
3e24c770
MS
1438 av_free(sdp);
1439 if (reply->status_code != RTSP_STATUS_OK)
1440 return AVERROR_INVALIDDATA;
1441
1442 /* Set up the RTSPStreams for each AVStream */
1443 for (i = 0; i < s->nb_streams; i++) {
1444 RTSPStream *rtsp_st;
1445 AVStream *st = s->streams[i];
1446
1447 rtsp_st = av_mallocz(sizeof(RTSPStream));
1448 if (!rtsp_st)
1449 return AVERROR(ENOMEM);
1450 dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
1451
1452 st->priv_data = rtsp_st;
1453 rtsp_st->stream_index = i;
1454
db76ca7f 1455 av_strlcpy(rtsp_st->control_url, rt->control_uri, sizeof(rtsp_st->control_url));
3e24c770
MS
1456 /* Note, this must match the relative uri set in the sdp content */
1457 av_strlcatf(rtsp_st->control_url, sizeof(rtsp_st->control_url),
1458 "/streamid=%d", i);
1459 }
1460
1461 return 0;
1462}
1463
b8c2c41d
JA
1464void ff_rtsp_close_connections(AVFormatContext *s)
1465{
1466 RTSPState *rt = s->priv_data;
1467 if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
1468 url_close(rt->rtsp_hd);
1469}
1470
3307e6ea 1471int ff_rtsp_connect(AVFormatContext *s)
53620bba
RB
1472{
1473 RTSPState *rt = s->priv_data;
921da217
LB
1474 char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128];
1475 char *option_list, *option, *filename;
b8c2c41d 1476 URLContext *rtsp_hd, *rtsp_hd_out;
03f8fc08 1477 int port, err, tcp_fd;
3370289a 1478 RTSPMessageHeader reply1 = {}, *reply = &reply1;
90abbdba 1479 int lower_transport_mask = 0;
1cf151e9 1480 char real_challenge[64];
03f8fc08
MS
1481 struct sockaddr_storage peer;
1482 socklen_t peer_len = sizeof(peer);
57b5555c
MS
1483
1484 if (!ff_network_init())
1485 return AVERROR(EIO);
c8965800 1486redirect:
53620bba 1487 /* extract hostname and port */
c5c6e67c 1488 ff_url_split(NULL, 0, auth, sizeof(auth),
f984dcf6 1489 host, sizeof(host), &port, path, sizeof(path), s->filename);
f9337897 1490 if (*auth) {
aa8bf2fb 1491 av_strlcpy(rt->auth, auth, sizeof(rt->auth));
f9337897 1492 }
53620bba
RB
1493 if (port < 0)
1494 port = RTSP_DEFAULT_PORT;
1495
1496 /* search for options */
602eb779 1497 option_list = strrchr(path, '?');
53620bba 1498 if (option_list) {
2a21adf9
MS
1499 /* Strip out the RTSP specific options, write out the rest of
1500 * the options back into the same string. */
1501 filename = option_list;
c8965800 1502 while (option_list) {
53620bba 1503 /* move the option pointer */
921da217 1504 option = ++option_list;
53620bba
RB
1505 option_list = strchr(option_list, '&');
1506 if (option_list)
921da217
LB
1507 *option_list = 0;
1508
53620bba 1509 /* handle the options */
c8965800 1510 if (!strcmp(option, "udp")) {
7a033e08 1511 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
c8965800 1512 } else if (!strcmp(option, "multicast")) {
7a033e08 1513 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
c8965800 1514 } else if (!strcmp(option, "tcp")) {
7a033e08 1515 lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
c8965800 1516 } else {
2a21adf9
MS
1517 /* Write options back into the buffer, using memmove instead
1518 * of strcpy since the strings may overlap. */
1519 int len = strlen(option);
1520 memmove(++filename, option, len);
1521 filename += len;
921da217
LB
1522 if (option_list) *filename = '&';
1523 }
53620bba 1524 }
921da217 1525 *filename = 0;
53620bba
RB
1526 }
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);
3e24c770
MS
1535 if (!lower_transport_mask) {
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
53620bba 1549 /* open the tcp connexion */
57b5555c 1550 ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL);
f9337897
RB
1551 if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) {
1552 err = AVERROR(EIO);
1553 goto fail;
1554 }
b8c2c41d 1555 rtsp_hd_out = rtsp_hd;
53620bba 1556 rt->rtsp_hd = rtsp_hd;
b8c2c41d 1557 rt->rtsp_hd_out = rtsp_hd_out;
53620bba
RB
1558 rt->seq = 0;
1559
03f8fc08
MS
1560 tcp_fd = url_get_file_handle(rtsp_hd);
1561 if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) {
1562 getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host),
1563 NULL, 0, NI_NUMERICHOST);
1564 }
1565
c8965800
RB
1566 /* request options supported by the server; this also detects server
1567 * type */
1cf151e9 1568 for (rt->server_type = RTSP_SERVER_RTP;;) {
b17d11c6 1569 cmd[0] = 0;
2e889ae4 1570 if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9
RB
1571 av_strlcat(cmd,
1572 /**
1573 * The following entries are required for proper
1574 * streaming from a Realmedia server. They are
1575 * interdependent in some way although we currently
1576 * don't quite understand how. Values were copied
1577 * from mplayer SVN r23589.
1578 * @param CompanyID is a 16-byte ID in base64
1579 * @param ClientChallenge is a 16-byte ID in hex
1580 */
1581 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1582 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1583 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1584 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1585 sizeof(cmd));
b17d11c6 1586 ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL);
1cf151e9
RB
1587 if (reply->status_code != RTSP_STATUS_OK) {
1588 err = AVERROR_INVALIDDATA;
1589 goto fail;
1590 }
1591
1592 /* detect server type if not standard-compliant RTP */
2e889ae4
RB
1593 if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) {
1594 rt->server_type = RTSP_SERVER_REAL;
1cf151e9 1595 continue;
7a86bafa
RB
1596 } else if (!strncasecmp(reply->server, "WMServer/", 9)) {
1597 rt->server_type = RTSP_SERVER_WMS;
c8965800 1598 } else if (rt->server_type == RTSP_SERVER_REAL)
1cf151e9 1599 strcpy(real_challenge, reply->real_challenge);
1cf151e9
RB
1600 break;
1601 }
1602
3e24c770 1603 if (s->iformat)
6e69f6c4 1604 err = rtsp_setup_input_streams(s, reply);
3e24c770 1605 else
26cb700c 1606 err = rtsp_setup_output_streams(s, host);
e23d195d 1607 if (err)
53620bba 1608 goto fail;
53620bba 1609
8a8754d8 1610 do {
c8965800
RB
1611 int lower_transport = ff_log2_tab[lower_transport_mask &
1612 ~(lower_transport_mask - 1)];
8a8754d8 1613
90abbdba 1614 err = make_setup_request(s, host, port, lower_transport,
2e889ae4 1615 rt->server_type == RTSP_SERVER_REAL ?
e9dea59f 1616 real_challenge : NULL);
8a8754d8 1617 if (err < 0)
7e6ca34f 1618 goto fail;
90abbdba
RB
1619 lower_transport_mask &= ~(1 << lower_transport);
1620 if (lower_transport_mask == 0 && err == 1) {
adef229e 1621 err = FF_NETERROR(EPROTONOSUPPORT);
8a8754d8
RB
1622 goto fail;
1623 }
1624 } while (err);
53620bba 1625
ff762d6e 1626 rt->state = RTSP_STATE_IDLE;
c8965800 1627 rt->seek_timestamp = 0; /* default is to start stream at position zero */
1617ad97
FB
1628 return 0;
1629 fail:
3307e6ea 1630 ff_rtsp_close_streams(s);
b8c2c41d 1631 ff_rtsp_close_connections(s);
35cfd646 1632 if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) {
d243ba30
LB
1633 av_strlcpy(s->filename, reply->location, sizeof(s->filename));
1634 av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
1635 reply->status_code,
1636 s->filename);
1637 goto redirect;
1638 }
57b5555c 1639 ff_network_close();
1617ad97
FB
1640 return err;
1641}
6f5a3d0a 1642#endif
1617ad97 1643
6f5a3d0a 1644#if CONFIG_RTSP_DEMUXER
4280f9bb
MS
1645static int rtsp_read_header(AVFormatContext *s,
1646 AVFormatParameters *ap)
1647{
4280f9bb
MS
1648 int ret;
1649
3307e6ea 1650 ret = ff_rtsp_connect(s);
4280f9bb
MS
1651 if (ret)
1652 return ret;
1653
1654 if (ap->initial_pause) {
1655 /* do not start immediately */
1656 } else {
1657 if (rtsp_read_play(s) < 0) {
3307e6ea 1658 ff_rtsp_close_streams(s);
b8c2c41d 1659 ff_rtsp_close_connections(s);
4280f9bb
MS
1660 return AVERROR_INVALIDDATA;
1661 }
1662 }
1663
1664 return 0;
1665}
1666
0e59034e
RB
1667static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1668 uint8_t *buf, int buf_size)
1669{
1670 RTSPState *rt = s->priv_data;
1671 RTSPStream *rtsp_st;
1672 fd_set rfds;
9cba6f5f 1673 int fd, fd_max, n, i, ret, tcp_fd, timeout_cnt = 0;
0e59034e
RB
1674 struct timeval tv;
1675
c8965800 1676 for (;;) {
0e59034e
RB
1677 if (url_interrupt_cb())
1678 return AVERROR(EINTR);
1679 FD_ZERO(&rfds);
1680 if (rt->rtsp_hd) {
1681 tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
1682 FD_SET(tcp_fd, &rfds);
1683 } else {
1684 fd_max = 0;
1685 tcp_fd = -1;
1686 }
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) {
1690 /* currently, we cannot probe RTCP handle because of
1691 * blocking restrictions */
1692 fd = url_get_file_handle(rtsp_st->rtp_handle);
1693 if (fd > fd_max)
1694 fd_max = fd;
1695 FD_SET(fd, &rfds);
1696 }
1697 }
1698 tv.tv_sec = 0;
9cba6f5f 1699 tv.tv_usec = SELECT_TIMEOUT_MS * 1000;
0e59034e
RB
1700 n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
1701 if (n > 0) {
9cba6f5f 1702 timeout_cnt = 0;
c8965800 1703 for (i = 0; i < rt->nb_rtsp_streams; i++) {
0e59034e
RB
1704 rtsp_st = rt->rtsp_streams[i];
1705 if (rtsp_st->rtp_handle) {
1706 fd = url_get_file_handle(rtsp_st->rtp_handle);
1707 if (FD_ISSET(fd, &rfds)) {
1708 ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
1709 if (ret > 0) {
1710 *prtsp_st = rtsp_st;
1711 return ret;
1712 }
1713 }
1714 }
1715 }
1716#if CONFIG_RTSP_DEMUXER
27000636 1717 if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) {
0e59034e
RB
1718 RTSPMessageHeader reply;
1719
3032276b
MS
1720 ret = ff_rtsp_read_reply(s, &reply, NULL, 0);
1721 if (ret < 0)
1722 return ret;
0e59034e 1723 /* XXX: parse message */
c02fd3d2 1724 if (rt->state != RTSP_STATE_STREAMING)
0e59034e
RB
1725 return 0;
1726 }
1727#endif
9cba6f5f 1728 } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {
4aecee7f 1729 return FF_NETERROR(ETIMEDOUT);
9cba6f5f
SG
1730 } else if (n < 0 && errno != EINTR)
1731 return AVERROR(errno);
0e59034e
RB
1732 }
1733}
1734
8b1ab7bf
FB
1735static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
1736 uint8_t *buf, int buf_size)
1617ad97
FB
1737{
1738 RTSPState *rt = s->priv_data;
b6892136 1739 int id, len, i, ret;
1617ad97 1740 RTSPStream *rtsp_st;
1617ad97 1741
b6892136 1742#ifdef DEBUG_RTP_TCP
67c9cd69 1743 dprintf(s, "tcp_read_packet:\n");
b6892136 1744#endif
c8965800
RB
1745redo:
1746 for (;;) {
7e726132
RB
1747 RTSPMessageHeader reply;
1748
3307e6ea 1749 ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
7e726132 1750 if (ret == -1)
8b1ab7bf 1751 return -1;
7e726132 1752 if (ret == 1) /* received '$' */
1617ad97 1753 break;
7e726132 1754 /* XXX: parse message */
c02fd3d2 1755 if (rt->state != RTSP_STATE_STREAMING)
fccb1770 1756 return 0;
1617ad97 1757 }
0e848977 1758 ret = url_read_complete(rt->rtsp_hd, buf, 3);
b6892136 1759 if (ret != 3)
8b1ab7bf 1760 return -1;
c8965800 1761 id = buf[0];
80fb8234 1762 len = AV_RB16(buf + 1);
b6892136 1763#ifdef DEBUG_RTP_TCP
67c9cd69 1764 dprintf(s, "id=%d len=%d\n", id, len);
b6892136 1765#endif
8b1ab7bf 1766 if (len > buf_size || len < 12)
1617ad97
FB
1767 goto redo;
1768 /* get the data */
0e848977 1769 ret = url_read_complete(rt->rtsp_hd, buf, len);
b6892136 1770 if (ret != len)
8b1ab7bf 1771 return -1;
985b05d3 1772 if (rt->transport == RTSP_TRANSPORT_RDT &&
114732f4 1773 ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
985b05d3 1774 return -1;
115329f1 1775
1617ad97 1776 /* find the matching stream */
c8965800 1777 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 1778 rtsp_st = rt->rtsp_streams[i];
115329f1
DB
1779 if (id >= rtsp_st->interleaved_min &&
1780 id <= rtsp_st->interleaved_max)
1617ad97
FB
1781 goto found;
1782 }
1783 goto redo;
c8965800 1784found:
8b1ab7bf
FB
1785 *prtsp_st = rtsp_st;
1786 return len;
1617ad97
FB
1787}
1788
0e59034e
RB
1789static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
1790{
1791 RTSPState *rt = s->priv_data;
1792 int ret, len;
1793 uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
1794 RTSPStream *rtsp_st;
1795
1796 /* get next frames from the same RTP packet */
1797 if (rt->cur_transport_priv) {
c8965800 1798 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1799 ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
c8965800 1800 } else
0e59034e
RB
1801 ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
1802 if (ret == 0) {
1803 rt->cur_transport_priv = NULL;
1804 return 0;
1805 } else if (ret == 1) {
1806 return 0;
c8965800 1807 } else
0e59034e 1808 rt->cur_transport_priv = NULL;
0e59034e
RB
1809 }
1810
1811 /* read next RTP packet */
1812 redo:
1813 switch(rt->lower_transport) {
1814 default:
1815#if CONFIG_RTSP_DEMUXER
1816 case RTSP_LOWER_TRANSPORT_TCP:
1817 len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1818 break;
1819#endif
1820 case RTSP_LOWER_TRANSPORT_UDP:
1821 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
1822 len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
1823 if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
1824 rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
1825 break;
1826 }
1827 if (len < 0)
1828 return len;
1829 if (len == 0)
1830 return AVERROR_EOF;
c8965800 1831 if (rt->transport == RTSP_TRANSPORT_RDT) {
0e59034e 1832 ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48 1833 } else {
0e59034e 1834 ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
2cab6b48
MS
1835 if (ret < 0) {
1836 /* Either bad packet, or a RTCP packet. Check if the
1837 * first_rtcp_ntp_time field was initialized. */
1838 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
1839 if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
1840 /* first_rtcp_ntp_time has been initialized for this stream,
1841 * copy the same value to all other uninitialized streams,
1842 * in order to map their timestamp origin to the same ntp time
1843 * as this one. */
1844 int i;
1845 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1846 RTPDemuxContext *rtpctx2 = rtsp_st->transport_priv;
1847 if (rtpctx2 &&
1848 rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE)
1849 rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time;
1850 }
1851 }
1852 }
1853 }
0e59034e
RB
1854 if (ret < 0)
1855 goto redo;
c8965800 1856 if (ret == 1)
0e59034e
RB
1857 /* more packets may follow, so we save the RTP context */
1858 rt->cur_transport_priv = rtsp_st->transport_priv;
0e59034e
RB
1859
1860 return ret;
1861}
1862
c8965800 1863static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
1617ad97
FB
1864{
1865 RTSPState *rt = s->priv_data;
98713182 1866 int ret;
30e79845
RB
1867 RTSPMessageHeader reply1, *reply = &reply1;
1868 char cmd[1024];
8b1ab7bf 1869
572c6a38 1870 if (rt->server_type == RTSP_SERVER_REAL) {
1256d16b 1871 int i;
572c6a38 1872 enum AVDiscard cache[MAX_STREAMS];
1256d16b 1873
572c6a38
RB
1874 for (i = 0; i < s->nb_streams; i++)
1875 cache[i] = s->streams[i]->discard;
1876
1877 if (!rt->need_subscription) {
1878 if (memcmp (cache, rt->real_setup_cache,
1879 sizeof(enum AVDiscard) * s->nb_streams)) {
8b9457de 1880 snprintf(cmd, sizeof(cmd),
7eaa646f 1881 "Unsubscribe: %s\r\n",
b17d11c6
MS
1882 rt->last_subscription);
1883 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1884 cmd, reply, NULL);
572c6a38
RB
1885 if (reply->status_code != RTSP_STATUS_OK)
1886 return AVERROR_INVALIDDATA;
1887 rt->need_subscription = 1;
1888 }
1256d16b 1889 }
1256d16b 1890
572c6a38
RB
1891 if (rt->need_subscription) {
1892 int r, rule_nr, first = 1;
1893
1894 memcpy(rt->real_setup_cache, cache,
1895 sizeof(enum AVDiscard) * s->nb_streams);
1896 rt->last_subscription[0] = 0;
1897
1898 snprintf(cmd, sizeof(cmd),
b17d11c6 1899 "Subscribe: ");
572c6a38
RB
1900 for (i = 0; i < rt->nb_rtsp_streams; i++) {
1901 rule_nr = 0;
1902 for (r = 0; r < s->nb_streams; r++) {
1903 if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
1904 if (s->streams[r]->discard != AVDISCARD_ALL) {
1905 if (!first)
1906 av_strlcat(rt->last_subscription, ",",
1907 sizeof(rt->last_subscription));
1908 ff_rdt_subscribe_rule(
1909 rt->last_subscription,
1910 sizeof(rt->last_subscription), i, rule_nr);
1911 first = 0;
1912 }
1913 rule_nr++;
1914 }
1915 }
1916 }
1917 av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
b17d11c6
MS
1918 ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
1919 cmd, reply, NULL);
572c6a38
RB
1920 if (reply->status_code != RTSP_STATUS_OK)
1921 return AVERROR_INVALIDDATA;
1922 rt->need_subscription = 0;
1923
c02fd3d2 1924 if (rt->state == RTSP_STATE_STREAMING)
572c6a38
RB
1925 rtsp_read_play (s);
1926 }
1256d16b
RB
1927 }
1928
d7250724 1929 ret = rtsp_fetch_packet(s, pkt);
c8965800 1930 if (ret < 0)
98713182 1931 return ret;
30e79845
RB
1932
1933 /* send dummy request to keep TCP connection alive */
1934 if ((rt->server_type == RTSP_SERVER_WMS ||
1935 rt->server_type == RTSP_SERVER_REAL) &&
1936 (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
1937 if (rt->server_type == RTSP_SERVER_WMS) {
b17d11c6 1938 ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
30e79845 1939 } else {
b17d11c6 1940 ff_rtsp_send_cmd_async(s, "OPTIONS", "*", NULL);
30e79845
RB
1941 }
1942 }
1943
8b1ab7bf 1944 return 0;
1617ad97
FB
1945}
1946
ff762d6e
FB
1947/* pause the stream */
1948static int rtsp_read_pause(AVFormatContext *s)
b7b8fc34 1949{
ff762d6e 1950 RTSPState *rt = s->priv_data;
a9e534d5 1951 RTSPMessageHeader reply1, *reply = &reply1;
b7b8fc34 1952
c02fd3d2 1953 if (rt->state != RTSP_STATE_STREAMING)
ff762d6e 1954 return 0;
2e889ae4 1955 else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
b17d11c6 1956 ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
99b2ac07
RB
1957 if (reply->status_code != RTSP_STATUS_OK) {
1958 return -1;
1959 }
1256d16b 1960 }
5f86057f
RB
1961 rt->state = RTSP_STATE_PAUSED;
1962 return 0;
b7b8fc34
FB
1963}
1964
115329f1 1965static int rtsp_read_seek(AVFormatContext *s, int stream_index,
7b3c1382 1966 int64_t timestamp, int flags)
ff762d6e
FB
1967{
1968 RTSPState *rt = s->priv_data;
115329f1 1969
c8965800
RB
1970 rt->seek_timestamp = av_rescale_q(timestamp,
1971 s->streams[stream_index]->time_base,
1972 AV_TIME_BASE_Q);
ff762d6e
FB
1973 switch(rt->state) {
1974 default:
1975 case RTSP_STATE_IDLE:
1976 break;
c02fd3d2 1977 case RTSP_STATE_STREAMING:
ec606b36
LB
1978 if (rtsp_read_pause(s) != 0)
1979 return -1;
1980 rt->state = RTSP_STATE_SEEKING;
ff762d6e
FB
1981 if (rtsp_read_play(s) != 0)
1982 return -1;
1983 break;
1984 case RTSP_STATE_PAUSED:
1985 rt->state = RTSP_STATE_IDLE;
1986 break;
1987 }
1988 return 0;
1989}
1990
1617ad97
FB
1991static int rtsp_read_close(AVFormatContext *s)
1992{
1993 RTSPState *rt = s->priv_data;
1617ad97 1994
b6892136 1995#if 0
1617ad97 1996 /* NOTE: it is valid to flush the buffer here */
90abbdba 1997 if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
1617ad97
FB
1998 url_fclose(&rt->rtsp_gb);
1999 }
b6892136 2000#endif
b17d11c6 2001 ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
1617ad97 2002
3307e6ea 2003 ff_rtsp_close_streams(s);
b8c2c41d 2004 ff_rtsp_close_connections(s);
57b5555c 2005 ff_network_close();
1617ad97
FB
2006 return 0;
2007}
2008
d2a067d1 2009AVInputFormat rtsp_demuxer = {
1617ad97 2010 "rtsp",
bde15e74 2011 NULL_IF_CONFIG_SMALL("RTSP input format"),
1617ad97
FB
2012 sizeof(RTSPState),
2013 rtsp_probe,
2014 rtsp_read_header,
2015 rtsp_read_packet,
2016 rtsp_read_close,
ff762d6e 2017 rtsp_read_seek,
bb76a117 2018 .flags = AVFMT_NOFILE,
ff762d6e
FB
2019 .read_play = rtsp_read_play,
2020 .read_pause = rtsp_read_pause,
1617ad97 2021};
96862926 2022#endif
1617ad97 2023
cb1fdc61 2024static int sdp_probe(AVProbeData *p1)
93ced3e8 2025{
0e1ceacd 2026 const char *p = p1->buf, *p_end = p1->buf + p1->buf_size;
cb1fdc61
FB
2027
2028 /* we look for a line beginning "c=IN IP4" */
0e1ceacd 2029 while (p < p_end && *p != '\0') {
c8965800
RB
2030 if (p + sizeof("c=IN IP4") - 1 < p_end &&
2031 av_strstart(p, "c=IN IP4", NULL))
cb1fdc61 2032 return AVPROBE_SCORE_MAX / 2;
0e1ceacd 2033
c8965800 2034 while (p < p_end - 1 && *p != '\n') p++;
0e1ceacd 2035 if (++p >= p_end)
cb1fdc61 2036 break;
cb1fdc61
FB
2037 if (*p == '\r')
2038 p++;
2039 }
93ced3e8
FB
2040 return 0;
2041}
2042
2043#define SDP_MAX_SIZE 8192
2044
c8965800 2045static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
93ced3e8 2046{
8b1ab7bf 2047 RTSPState *rt = s->priv_data;
93ced3e8
FB
2048 RTSPStream *rtsp_st;
2049 int size, i, err;
2050 char *content;
2051 char url[1024];
2052
57b5555c
MS
2053 if (!ff_network_init())
2054 return AVERROR(EIO);
2055
93ced3e8
FB
2056 /* read the whole sdp file */
2057 /* XXX: better loading */
2058 content = av_malloc(SDP_MAX_SIZE);
899681cd 2059 size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
93ced3e8
FB
2060 if (size <= 0) {
2061 av_free(content);
2062 return AVERROR_INVALIDDATA;
2063 }
2064 content[size] ='\0';
2065
2066 sdp_parse(s, content);
2067 av_free(content);
2068
2069 /* open each RTP stream */
c8965800 2070 for (i = 0; i < rt->nb_rtsp_streams; i++) {
8b1ab7bf 2071 rtsp_st = rt->rtsp_streams[i];
115329f1 2072
57b5555c
MS
2073 ff_url_join(url, sizeof(url), "rtp", NULL,
2074 inet_ntoa(rtsp_st->sdp_ip), rtsp_st->sdp_port,
2075 "?localport=%d&ttl=%d", rtsp_st->sdp_port,
2076 rtsp_st->sdp_ttl);
dbf30963 2077 if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) {
93ced3e8
FB
2078 err = AVERROR_INVALIDDATA;
2079 goto fail;
2080 }
ee0cb67f 2081 if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
8b1ab7bf 2082 goto fail;
93ced3e8
FB
2083 }
2084 return 0;
c8965800 2085fail:
3307e6ea 2086 ff_rtsp_close_streams(s);
57b5555c 2087 ff_network_close();
93ced3e8
FB
2088 return err;
2089}
2090
93ced3e8
FB
2091static int sdp_read_close(AVFormatContext *s)
2092{
3307e6ea 2093 ff_rtsp_close_streams(s);
57b5555c 2094 ff_network_close();
93ced3e8
FB
2095 return 0;
2096}
2097
ff70e601 2098AVInputFormat sdp_demuxer = {
93ced3e8 2099 "sdp",
bde15e74 2100 NULL_IF_CONFIG_SMALL("SDP"),
93ced3e8
FB
2101 sizeof(RTSPState),
2102 sdp_probe,
2103 sdp_read_header,
d7250724 2104 rtsp_fetch_packet,
93ced3e8
FB
2105 sdp_read_close,
2106};