Commit | Line | Data |
---|---|---|
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, |
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 | |
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 | |
7246177d AJ |
22 | /* needed by inet_aton() */ |
23 | #define _SVID_SOURCE | |
24 | ||
f9337897 | 25 | #include "libavutil/base64.h" |
245976da | 26 | #include "libavutil/avstring.h" |
6a5d31ac | 27 | #include "libavutil/intreadwrite.h" |
1617ad97 FB |
28 | #include "avformat.h" |
29 | ||
db0ed93e | 30 | #include <sys/time.h> |
b250f9c6 | 31 | #if HAVE_SYS_SELECT_H |
933bd8e2 | 32 | #include <sys/select.h> |
6ad1c9c9 | 33 | #endif |
ea452b54 | 34 | #include <strings.h> |
42572ef5 | 35 | #include "network.h" |
c971ff19 | 36 | #include "rtsp.h" |
1617ad97 | 37 | |
302879cb | 38 | #include "rtpdec.h" |
e9dea59f | 39 | #include "rdt.h" |
1a30d541 | 40 | #include "rtp_asf.h" |
e6327fba | 41 | #include "rtp_vorbis.h" |
4934884a | 42 | |
1617ad97 | 43 | //#define DEBUG |
b6892136 | 44 | //#define DEBUG_RTP_TCP |
1617ad97 | 45 | |
c482500f | 46 | #if LIBAVFORMAT_VERSION_INT < (53 << 16) |
90abbdba | 47 | int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP); |
c482500f | 48 | #endif |
85fb7b34 | 49 | |
1ef36a70 | 50 | #define SPACE_CHARS " \t\r\n" |
da1e126e RB |
51 | /* we use memchr() instead of strchr() here because strchr() will return |
52 | * the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */ | |
53 | #define redir_isspace(c) memchr(SPACE_CHARS, c, 4) | |
1617ad97 FB |
54 | static void skip_spaces(const char **pp) |
55 | { | |
56 | const char *p; | |
57 | p = *pp; | |
58 | while (redir_isspace(*p)) | |
59 | p++; | |
60 | *pp = p; | |
61 | } | |
62 | ||
1ef36a70 RB |
63 | static void get_word_until_chars(char *buf, int buf_size, |
64 | const char *sep, const char **pp) | |
1617ad97 FB |
65 | { |
66 | const char *p; | |
67 | char *q; | |
68 | ||
69 | p = *pp; | |
70 | skip_spaces(&p); | |
71 | q = buf; | |
72 | while (!strchr(sep, *p) && *p != '\0') { | |
73 | if ((q - buf) < buf_size - 1) | |
74 | *q++ = *p; | |
75 | p++; | |
76 | } | |
77 | if (buf_size > 0) | |
78 | *q = '\0'; | |
79 | *pp = p; | |
80 | } | |
81 | ||
1ef36a70 RB |
82 | static void get_word_sep(char *buf, int buf_size, const char *sep, |
83 | const char **pp) | |
1617ad97 | 84 | { |
1ef36a70 RB |
85 | if (**pp == '/') (*pp)++; |
86 | get_word_until_chars(buf, buf_size, sep, pp); | |
87 | } | |
1617ad97 | 88 | |
1ef36a70 RB |
89 | static void get_word(char *buf, int buf_size, const char **pp) |
90 | { | |
91 | get_word_until_chars(buf, buf_size, SPACE_CHARS, pp); | |
1617ad97 FB |
92 | } |
93 | ||
c8965800 | 94 | /* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */ |
8f3c87f3 RB |
95 | static int sdp_parse_rtpmap(AVFormatContext *s, |
96 | AVCodecContext *codec, RTSPStream *rtsp_st, | |
c8965800 | 97 | int payload_type, const char *p) |
93ced3e8 FB |
98 | { |
99 | char buf[256]; | |
d1ccf0e0 RD |
100 | int i; |
101 | AVCodec *c; | |
7b49ce2e | 102 | const char *c_name; |
93ced3e8 | 103 | |
d1ccf0e0 | 104 | /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and |
9d50d396 RB |
105 | * see if we can handle this kind of payload. |
106 | * The space should normally not be there but some Real streams or | |
107 | * particular servers ("RealServer Version 6.1.3.970", see issue 1658) | |
108 | * have a trailing space. */ | |
109 | get_word_sep(buf, sizeof(buf), "/ ", &p); | |
d1ccf0e0 | 110 | if (payload_type >= RTP_PT_PRIVATE) { |
c8965800 RB |
111 | RTPDynamicProtocolHandler *handler; |
112 | for (handler = RTPFirstDynamicPayloadHandler; | |
113 | handler; handler = handler->next) { | |
114 | if (!strcasecmp(buf, handler->enc_name) && | |
115 | codec->codec_type == handler->codec_type) { | |
116 | codec->codec_id = handler->codec_id; | |
117 | rtsp_st->dynamic_handler = handler; | |
118 | if (handler->open) | |
119 | rtsp_st->dynamic_protocol_context = handler->open(); | |
d1ccf0e0 RD |
120 | break; |
121 | } | |
4934884a | 122 | } |
93ced3e8 | 123 | } else { |
c8965800 RB |
124 | /* We are in a standard case |
125 | * (from http://www.iana.org/assignments/rtp-parameters). */ | |
d1ccf0e0 | 126 | /* search into AVRtpPayloadTypes[] */ |
7ed19d7f | 127 | codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type); |
d1ccf0e0 RD |
128 | } |
129 | ||
130 | c = avcodec_find_decoder(codec->codec_id); | |
131 | if (c && c->name) | |
7b49ce2e | 132 | c_name = c->name; |
d1ccf0e0 | 133 | else |
170870b7 | 134 | c_name = "(null)"; |
d1ccf0e0 | 135 | |
7515ed0c RB |
136 | get_word_sep(buf, sizeof(buf), "/", &p); |
137 | i = atoi(buf); | |
138 | switch (codec->codec_type) { | |
139 | case CODEC_TYPE_AUDIO: | |
140 | av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name); | |
141 | codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE; | |
142 | codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS; | |
143 | if (i > 0) { | |
144 | codec->sample_rate = i; | |
145 | get_word_sep(buf, sizeof(buf), "/", &p); | |
146 | i = atoi(buf); | |
147 | if (i > 0) | |
148 | codec->channels = i; | |
149 | // TODO: there is a bug here; if it is a mono stream, and | |
150 | // less than 22000Hz, faad upconverts to stereo and twice | |
151 | // the frequency. No problem, but the sample rate is being | |
152 | // set here by the sdp line. Patch on its way. (rdm) | |
d1ccf0e0 | 153 | } |
7515ed0c RB |
154 | av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n", |
155 | codec->sample_rate); | |
156 | av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n", | |
157 | codec->channels); | |
158 | break; | |
159 | case CODEC_TYPE_VIDEO: | |
160 | av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name); | |
161 | break; | |
162 | default: | |
163 | break; | |
164 | } | |
165 | return 0; | |
93ced3e8 FB |
166 | } |
167 | ||
c8965800 | 168 | /* return the length and optionally the data */ |
93ced3e8 FB |
169 | static int hex_to_data(uint8_t *data, const char *p) |
170 | { | |
171 | int c, len, v; | |
172 | ||
173 | len = 0; | |
174 | v = 1; | |
c8965800 | 175 | for (;;) { |
93ced3e8 | 176 | skip_spaces(&p); |
6a8c8b36 | 177 | if (*p == '\0') |
93ced3e8 | 178 | break; |
c8965800 | 179 | c = toupper((unsigned char) *p++); |
93ced3e8 FB |
180 | if (c >= '0' && c <= '9') |
181 | c = c - '0'; | |
182 | else if (c >= 'A' && c <= 'F') | |
183 | c = c - 'A' + 10; | |
184 | else | |
185 | break; | |
186 | v = (v << 4) | c; | |
187 | if (v & 0x100) { | |
188 | if (data) | |
189 | data[len] = v; | |
190 | len++; | |
191 | v = 1; | |
192 | } | |
193 | } | |
194 | return len; | |
195 | } | |
196 | ||
e6327fba RB |
197 | static void sdp_parse_fmtp_config(AVCodecContext * codec, void *ctx, |
198 | char *attr, char *value) | |
d1ccf0e0 RD |
199 | { |
200 | switch (codec->codec_id) { | |
c8965800 RB |
201 | case CODEC_ID_MPEG4: |
202 | case CODEC_ID_AAC: | |
203 | if (!strcmp(attr, "config")) { | |
204 | /* decode the hexa encoded parameter */ | |
205 | int len = hex_to_data(NULL, value); | |
206 | if (codec->extradata) | |
207 | av_free(codec->extradata); | |
208 | codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE); | |
209 | if (!codec->extradata) | |
210 | return; | |
211 | codec->extradata_size = len; | |
212 | hex_to_data(codec->extradata, value); | |
213 | } | |
214 | break; | |
215 | case CODEC_ID_VORBIS: | |
216 | ff_vorbis_parse_fmtp_config(codec, ctx, attr, value); | |
217 | break; | |
218 | default: | |
219 | break; | |
d1ccf0e0 RD |
220 | } |
221 | return; | |
222 | } | |
223 | ||
644e7acb | 224 | typedef struct { |
7b49ce2e | 225 | const char *str; |
c8965800 RB |
226 | uint16_t type; |
227 | uint32_t offset; | |
644e7acb | 228 | } AttrNameMap; |
d1ccf0e0 RD |
229 | |
230 | /* All known fmtp parmeters and the corresping RTPAttrTypeEnum */ | |
231 | #define ATTR_NAME_TYPE_INT 0 | |
232 | #define ATTR_NAME_TYPE_STR 1 | |
644e7acb | 233 | static const AttrNameMap attr_names[]= |
d1ccf0e0 | 234 | { |
c8965800 RB |
235 | { "SizeLength", ATTR_NAME_TYPE_INT, |
236 | offsetof(RTPPayloadData, sizelength) }, | |
237 | { "IndexLength", ATTR_NAME_TYPE_INT, | |
238 | offsetof(RTPPayloadData, indexlength) }, | |
239 | { "IndexDeltaLength", ATTR_NAME_TYPE_INT, | |
240 | offsetof(RTPPayloadData, indexdeltalength) }, | |
241 | { "profile-level-id", ATTR_NAME_TYPE_INT, | |
242 | offsetof(RTPPayloadData, profile_level_id) }, | |
243 | { "StreamType", ATTR_NAME_TYPE_INT, | |
244 | offsetof(RTPPayloadData, streamtype) }, | |
245 | { "mode", ATTR_NAME_TYPE_STR, | |
246 | offsetof(RTPPayloadData, mode) }, | |
247 | { NULL, -1, -1 }, | |
d1ccf0e0 RD |
248 | }; |
249 | ||
c8965800 RB |
250 | /* parse the attribute line from the fmtp a line of an sdp resonse. This |
251 | * is broken out as a function because it is used in rtp_h264.c, which is | |
252 | * forthcoming. */ | |
253 | int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, | |
254 | char *value, int value_size) | |
d0deedcb RM |
255 | { |
256 | skip_spaces(p); | |
c8965800 | 257 | if (**p) { |
d0deedcb RM |
258 | get_word_sep(attr, attr_size, "=", p); |
259 | if (**p == '=') | |
260 | (*p)++; | |
261 | get_word_sep(value, value_size, ";", p); | |
262 | if (**p == ';') | |
263 | (*p)++; | |
264 | return 1; | |
265 | } | |
266 | return 0; | |
267 | } | |
268 | ||
d1ccf0e0 RD |
269 | /* parse a SDP line and save stream attributes */ |
270 | static void sdp_parse_fmtp(AVStream *st, const char *p) | |
93ced3e8 FB |
271 | { |
272 | char attr[256]; | |
373afbaf RB |
273 | /* Vorbis setup headers can be up to 12KB and are sent base64 |
274 | * encoded, giving a 12KB * (4/3) = 16KB FMTP line. */ | |
275 | char value[16384]; | |
d1ccf0e0 | 276 | int i; |
d1ccf0e0 | 277 | RTSPStream *rtsp_st = st->priv_data; |
01f4895c | 278 | AVCodecContext *codec = st->codec; |
be73a544 | 279 | RTPPayloadData *rtp_payload_data = &rtsp_st->rtp_payload_data; |
93ced3e8 FB |
280 | |
281 | /* loop on each attribute */ | |
c8965800 RB |
282 | while (rtsp_next_attr_and_value(&p, attr, sizeof(attr), |
283 | value, sizeof(value))) { | |
284 | /* grab the codec extra_data from the config parameter of the fmtp | |
285 | * line */ | |
e6327fba RB |
286 | sdp_parse_fmtp_config(codec, rtsp_st->dynamic_protocol_context, |
287 | attr, value); | |
d1ccf0e0 RD |
288 | /* Looking for a known attribute */ |
289 | for (i = 0; attr_names[i].str; ++i) { | |
290 | if (!strcasecmp(attr, attr_names[i].str)) { | |
c8965800 RB |
291 | if (attr_names[i].type == ATTR_NAME_TYPE_INT) { |
292 | *(int *)((char *)rtp_payload_data + | |
293 | attr_names[i].offset) = atoi(value); | |
294 | } else if (attr_names[i].type == ATTR_NAME_TYPE_STR) | |
295 | *(char **)((char *)rtp_payload_data + | |
296 | attr_names[i].offset) = av_strdup(value); | |
bb270c08 | 297 | } |
93ced3e8 | 298 | } |
93ced3e8 FB |
299 | } |
300 | } | |
301 | ||
debe86bf | 302 | /** Parse a string p in the form of Range:npt=xx-xx, and determine the start |
31693e00 RM |
303 | * and end time. |
304 | * Used for seeking in the rtp stream. | |
305 | */ | |
306 | static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end) | |
307 | { | |
308 | char buf[256]; | |
309 | ||
310 | skip_spaces(&p); | |
f7d78f36 | 311 | if (!av_stristart(p, "npt=", &p)) |
31693e00 RM |
312 | return; |
313 | ||
314 | *start = AV_NOPTS_VALUE; | |
315 | *end = AV_NOPTS_VALUE; | |
316 | ||
317 | get_word_sep(buf, sizeof(buf), "-", &p); | |
318 | *start = parse_date(buf, 1); | |
319 | if (*p == '-') { | |
320 | p++; | |
321 | get_word_sep(buf, sizeof(buf), "-", &p); | |
322 | *end = parse_date(buf, 1); | |
323 | } | |
324 | // av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start); | |
325 | // av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end); | |
326 | } | |
327 | ||
93ced3e8 FB |
328 | typedef struct SDPParseState { |
329 | /* SDP only */ | |
330 | struct in_addr default_ip; | |
c8965800 RB |
331 | int default_ttl; |
332 | int skip_media; ///< set if an unknown m= line occurs | |
93ced3e8 FB |
333 | } SDPParseState; |
334 | ||
335 | static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1, | |
1617ad97 FB |
336 | int letter, const char *buf) |
337 | { | |
8b1ab7bf | 338 | RTSPState *rt = s->priv_data; |
1617ad97 FB |
339 | char buf1[64], st_type[64]; |
340 | const char *p; | |
fb65d2ca DP |
341 | enum CodecType codec_type; |
342 | int payload_type, i; | |
1617ad97 FB |
343 | AVStream *st; |
344 | RTSPStream *rtsp_st; | |
93ced3e8 FB |
345 | struct in_addr sdp_ip; |
346 | int ttl; | |
347 | ||
67c9cd69 | 348 | dprintf(s, "sdp: %c='%s'\n", letter, buf); |
1617ad97 FB |
349 | |
350 | p = buf; | |
cb760a47 RB |
351 | if (s1->skip_media && letter != 'm') |
352 | return; | |
c8965800 | 353 | switch (letter) { |
93ced3e8 FB |
354 | case 'c': |
355 | get_word(buf1, sizeof(buf1), &p); | |
356 | if (strcmp(buf1, "IN") != 0) | |
357 | return; | |
358 | get_word(buf1, sizeof(buf1), &p); | |
359 | if (strcmp(buf1, "IP4") != 0) | |
360 | return; | |
361 | get_word_sep(buf1, sizeof(buf1), "/", &p); | |
362 | if (inet_aton(buf1, &sdp_ip) == 0) | |
363 | return; | |
364 | ttl = 16; | |
365 | if (*p == '/') { | |
366 | p++; | |
367 | get_word_sep(buf1, sizeof(buf1), "/", &p); | |
368 | ttl = atoi(buf1); | |
369 | } | |
370 | if (s->nb_streams == 0) { | |
371 | s1->default_ip = sdp_ip; | |
372 | s1->default_ttl = ttl; | |
373 | } else { | |
374 | st = s->streams[s->nb_streams - 1]; | |
375 | rtsp_st = st->priv_data; | |
376 | rtsp_st->sdp_ip = sdp_ip; | |
377 | rtsp_st->sdp_ttl = ttl; | |
378 | } | |
379 | break; | |
1617ad97 | 380 | case 's': |
da61e413 | 381 | av_metadata_set(&s->metadata, "title", p); |
1617ad97 FB |
382 | break; |
383 | case 'i': | |
384 | if (s->nb_streams == 0) { | |
da61e413 | 385 | av_metadata_set(&s->metadata, "comment", p); |
1617ad97 FB |
386 | break; |
387 | } | |
388 | break; | |
389 | case 'm': | |
390 | /* new stream */ | |
cb760a47 | 391 | s1->skip_media = 0; |
1617ad97 FB |
392 | get_word(st_type, sizeof(st_type), &p); |
393 | if (!strcmp(st_type, "audio")) { | |
394 | codec_type = CODEC_TYPE_AUDIO; | |
395 | } else if (!strcmp(st_type, "video")) { | |
396 | codec_type = CODEC_TYPE_VIDEO; | |
090438cc RB |
397 | } else if (!strcmp(st_type, "application")) { |
398 | codec_type = CODEC_TYPE_DATA; | |
1617ad97 | 399 | } else { |
cb760a47 | 400 | s1->skip_media = 1; |
1617ad97 FB |
401 | return; |
402 | } | |
1617ad97 FB |
403 | rtsp_st = av_mallocz(sizeof(RTSPStream)); |
404 | if (!rtsp_st) | |
405 | return; | |
8b1ab7bf FB |
406 | rtsp_st->stream_index = -1; |
407 | dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st); | |
93ced3e8 FB |
408 | |
409 | rtsp_st->sdp_ip = s1->default_ip; | |
410 | rtsp_st->sdp_ttl = s1->default_ttl; | |
411 | ||
93ced3e8 FB |
412 | get_word(buf1, sizeof(buf1), &p); /* port */ |
413 | rtsp_st->sdp_port = atoi(buf1); | |
414 | ||
415 | get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */ | |
115329f1 | 416 | |
93ced3e8 FB |
417 | /* XXX: handle list of formats */ |
418 | get_word(buf1, sizeof(buf1), &p); /* format list */ | |
419 | rtsp_st->sdp_payload_type = atoi(buf1); | |
93ced3e8 | 420 | |
7ed19d7f | 421 | if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) { |
8b1ab7bf FB |
422 | /* no corresponding stream */ |
423 | } else { | |
424 | st = av_new_stream(s, 0); | |
425 | if (!st) | |
426 | return; | |
427 | st->priv_data = rtsp_st; | |
428 | rtsp_st->stream_index = st->index; | |
01f4895c | 429 | st->codec->codec_type = codec_type; |
d1ccf0e0 | 430 | if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) { |
8b1ab7bf | 431 | /* if standard payload type, we can find the codec right now */ |
bf6d9818 | 432 | ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type); |
8b1ab7bf FB |
433 | } |
434 | } | |
1617ad97 | 435 | /* put a default control url */ |
00eb13e0 | 436 | av_strlcpy(rtsp_st->control_url, rt->control_uri, |
c8965800 | 437 | sizeof(rtsp_st->control_url)); |
1617ad97 FB |
438 | break; |
439 | case 'a': | |
00eb13e0 AS |
440 | if (av_strstart(p, "control:", &p)) { |
441 | if (s->nb_streams == 0) { | |
442 | if (!strncmp(p, "rtsp://", 7)) | |
443 | av_strlcpy(rt->control_uri, p, | |
444 | sizeof(rt->control_uri)); | |
445 | } else { | |
1617ad97 FB |
446 | char proto[32]; |
447 | /* get the control url */ | |
448 | st = s->streams[s->nb_streams - 1]; | |
449 | rtsp_st = st->priv_data; | |
115329f1 | 450 | |
1617ad97 | 451 | /* XXX: may need to add full url resolution */ |
c8965800 RB |
452 | url_split(proto, sizeof(proto), NULL, 0, NULL, 0, |
453 | NULL, NULL, 0, p); | |
1617ad97 FB |
454 | if (proto[0] == '\0') { |
455 | /* relative control URL */ | |
00eb13e0 | 456 | if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/') |
c8965800 RB |
457 | av_strlcat(rtsp_st->control_url, "/", |
458 | sizeof(rtsp_st->control_url)); | |
459 | av_strlcat(rtsp_st->control_url, p, | |
460 | sizeof(rtsp_st->control_url)); | |
461 | } else | |
462 | av_strlcpy(rtsp_st->control_url, p, | |
463 | sizeof(rtsp_st->control_url)); | |
00eb13e0 | 464 | } |
83d14c85 | 465 | } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) { |
93ced3e8 | 466 | /* NOTE: rtpmap is only supported AFTER the 'm=' tag */ |
115329f1 | 467 | get_word(buf1, sizeof(buf1), &p); |
93ced3e8 | 468 | payload_type = atoi(buf1); |
83d14c85 | 469 | st = s->streams[s->nb_streams - 1]; |
ff16f551 | 470 | rtsp_st = st->priv_data; |
8f3c87f3 | 471 | sdp_parse_rtpmap(s, st->codec, rtsp_st, payload_type, p); |
f7d78f36 | 472 | } else if (av_strstart(p, "fmtp:", &p)) { |
93ced3e8 | 473 | /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */ |
115329f1 | 474 | get_word(buf1, sizeof(buf1), &p); |
93ced3e8 | 475 | payload_type = atoi(buf1); |
c8965800 RB |
476 | for (i = 0; i < s->nb_streams; i++) { |
477 | st = s->streams[i]; | |
93ced3e8 FB |
478 | rtsp_st = st->priv_data; |
479 | if (rtsp_st->sdp_payload_type == payload_type) { | |
c8965800 RB |
480 | if (!(rtsp_st->dynamic_handler && |
481 | rtsp_st->dynamic_handler->parse_sdp_a_line && | |
482 | rtsp_st->dynamic_handler->parse_sdp_a_line(s, | |
483 | i, rtsp_st->dynamic_protocol_context, buf))) | |
ed787542 | 484 | sdp_parse_fmtp(st, p); |
93ced3e8 FB |
485 | } |
486 | } | |
c8965800 | 487 | } else if (av_strstart(p, "framesize:", &p)) { |
d0deedcb RM |
488 | // let dynamic protocol handlers have a stab at the line. |
489 | get_word(buf1, sizeof(buf1), &p); | |
490 | payload_type = atoi(buf1); | |
c8965800 RB |
491 | for (i = 0; i < s->nb_streams; i++) { |
492 | st = s->streams[i]; | |
d0deedcb | 493 | rtsp_st = st->priv_data; |
c8965800 RB |
494 | if (rtsp_st->sdp_payload_type == payload_type && |
495 | rtsp_st->dynamic_handler && | |
496 | rtsp_st->dynamic_handler->parse_sdp_a_line) | |
497 | rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, | |
498 | rtsp_st->dynamic_protocol_context, buf); | |
d0deedcb | 499 | } |
c8965800 | 500 | } else if (av_strstart(p, "range:", &p)) { |
31693e00 RM |
501 | int64_t start, end; |
502 | ||
503 | // this is so that seeking on a streamed file can work. | |
504 | rtsp_parse_range_npt(p, &start, &end); | |
c8965800 RB |
505 | s->start_time = start; |
506 | /* AV_NOPTS_VALUE means live broadcast (and can't seek) */ | |
507 | s->duration = (end == AV_NOPTS_VALUE) ? | |
508 | AV_NOPTS_VALUE : end - start; | |
119b4668 RB |
509 | } else if (av_strstart(p, "IsRealDataType:integer;",&p)) { |
510 | if (atoi(p) == 1) | |
511 | rt->transport = RTSP_TRANSPORT_RDT; | |
1a30d541 RB |
512 | } else { |
513 | if (rt->server_type == RTSP_SERVER_WMS) | |
514 | ff_wms_parse_sdp_a_line(s, p); | |
515 | if (s->nb_streams > 0) { | |
c4a3d032 RB |
516 | if (rt->server_type == RTSP_SERVER_REAL) |
517 | ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p); | |
518 | ||
519 | rtsp_st = s->streams[s->nb_streams - 1]->priv_data; | |
520 | if (rtsp_st->dynamic_handler && | |
521 | rtsp_st->dynamic_handler->parse_sdp_a_line) | |
c8965800 RB |
522 | rtsp_st->dynamic_handler->parse_sdp_a_line(s, |
523 | s->nb_streams - 1, | |
c4a3d032 | 524 | rtsp_st->dynamic_protocol_context, buf); |
1a30d541 | 525 | } |
1617ad97 FB |
526 | } |
527 | break; | |
528 | } | |
529 | } | |
530 | ||
5c91a675 | 531 | static int sdp_parse(AVFormatContext *s, const char *content) |
1617ad97 FB |
532 | { |
533 | const char *p; | |
534 | int letter; | |
9211bcdd RB |
535 | /* Some SDP lines, particularly for Realmedia or ASF RTSP streams, |
536 | * contain long SDP lines containing complete ASF Headers (several | |
537 | * kB) or arrays of MDPR (RM stream descriptor) headers plus | |
538 | * "rulebooks" describing their properties. Therefore, the SDP line | |
373afbaf RB |
539 | * buffer is large. |
540 | * | |
541 | * The Vorbis FMTP line can be up to 16KB - see sdp_parse_fmtp. */ | |
542 | char buf[16384], *q; | |
93ced3e8 | 543 | SDPParseState sdp_parse_state, *s1 = &sdp_parse_state; |
115329f1 | 544 | |
93ced3e8 | 545 | memset(s1, 0, sizeof(SDPParseState)); |
1617ad97 | 546 | p = content; |
c8965800 | 547 | for (;;) { |
1617ad97 FB |
548 | skip_spaces(&p); |
549 | letter = *p; | |
550 | if (letter == '\0') | |
551 | break; | |
552 | p++; | |
553 | if (*p != '=') | |
554 | goto next_line; | |
555 | p++; | |
556 | /* get the content */ | |
557 | q = buf; | |
b6892136 | 558 | while (*p != '\n' && *p != '\r' && *p != '\0') { |
1617ad97 FB |
559 | if ((q - buf) < sizeof(buf) - 1) |
560 | *q++ = *p; | |
561 | p++; | |
562 | } | |
563 | *q = '\0'; | |
93ced3e8 | 564 | sdp_parse_line(s, s1, letter, buf); |
1617ad97 FB |
565 | next_line: |
566 | while (*p != '\n' && *p != '\0') | |
567 | p++; | |
568 | if (*p == '\n') | |
569 | p++; | |
570 | } | |
571 | return 0; | |
572 | } | |
573 | ||
1ced9da3 LA |
574 | /* close and free RTSP streams */ |
575 | static void rtsp_close_streams(RTSPState *rt) | |
576 | { | |
577 | int i; | |
578 | RTSPStream *rtsp_st; | |
579 | ||
c8965800 | 580 | for (i = 0; i < rt->nb_rtsp_streams; i++) { |
1ced9da3 LA |
581 | rtsp_st = rt->rtsp_streams[i]; |
582 | if (rtsp_st) { | |
583 | if (rtsp_st->transport_priv) { | |
584 | if (rt->transport == RTSP_TRANSPORT_RDT) | |
585 | ff_rdt_parse_close(rtsp_st->transport_priv); | |
586 | else | |
587 | rtp_parse_close(rtsp_st->transport_priv); | |
588 | } | |
589 | if (rtsp_st->rtp_handle) | |
590 | url_close(rtsp_st->rtp_handle); | |
591 | if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context) | |
c8965800 RB |
592 | rtsp_st->dynamic_handler->close( |
593 | rtsp_st->dynamic_protocol_context); | |
1ced9da3 LA |
594 | } |
595 | } | |
596 | av_free(rt->rtsp_streams); | |
597 | if (rt->asf_ctx) { | |
598 | av_close_input_stream (rt->asf_ctx); | |
599 | rt->asf_ctx = NULL; | |
600 | } | |
601 | av_freep(&rt->auth_b64); | |
602 | } | |
603 | ||
c8965800 | 604 | static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st) |
1ced9da3 LA |
605 | { |
606 | RTSPState *rt = s->priv_data; | |
607 | AVStream *st = NULL; | |
608 | ||
609 | /* open the RTP context */ | |
610 | if (rtsp_st->stream_index >= 0) | |
611 | st = s->streams[rtsp_st->stream_index]; | |
612 | if (!st) | |
613 | s->ctx_flags |= AVFMTCTX_NOHEADER; | |
614 | ||
615 | if (rt->transport == RTSP_TRANSPORT_RDT) | |
616 | rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index, | |
617 | rtsp_st->dynamic_protocol_context, | |
618 | rtsp_st->dynamic_handler); | |
619 | else | |
620 | rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle, | |
621 | rtsp_st->sdp_payload_type, | |
622 | &rtsp_st->rtp_payload_data); | |
623 | ||
624 | if (!rtsp_st->transport_priv) { | |
625 | return AVERROR(ENOMEM); | |
626 | } else if (rt->transport != RTSP_TRANSPORT_RDT) { | |
c8965800 | 627 | if (rtsp_st->dynamic_handler) { |
1ced9da3 LA |
628 | rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv, |
629 | rtsp_st->dynamic_protocol_context, | |
630 | rtsp_st->dynamic_handler); | |
631 | } | |
632 | } | |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
103dfbe2 | 637 | #if CONFIG_RTSP_DEMUXER |
1ced9da3 LA |
638 | static int rtsp_probe(AVProbeData *p) |
639 | { | |
640 | if (av_strstart(p->filename, "rtsp:", NULL)) | |
641 | return AVPROBE_SCORE_MAX; | |
642 | return 0; | |
643 | } | |
644 | ||
1617ad97 FB |
645 | static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp) |
646 | { | |
647 | const char *p; | |
648 | int v; | |
649 | ||
650 | p = *pp; | |
651 | skip_spaces(&p); | |
652 | v = strtol(p, (char **)&p, 10); | |
653 | if (*p == '-') { | |
654 | p++; | |
655 | *min_ptr = v; | |
656 | v = strtol(p, (char **)&p, 10); | |
657 | *max_ptr = v; | |
658 | } else { | |
659 | *min_ptr = v; | |
660 | *max_ptr = v; | |
661 | } | |
662 | *pp = p; | |
663 | } | |
664 | ||
665 | /* XXX: only one transport specification is parsed */ | |
a9e534d5 | 666 | static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p) |
1617ad97 FB |
667 | { |
668 | char transport_protocol[16]; | |
669 | char profile[16]; | |
670 | char lower_transport[16]; | |
671 | char parameter[16]; | |
672 | RTSPTransportField *th; | |
673 | char buf[256]; | |
115329f1 | 674 | |
1617ad97 | 675 | reply->nb_transports = 0; |
115329f1 | 676 | |
c8965800 | 677 | for (;;) { |
1617ad97 FB |
678 | skip_spaces(&p); |
679 | if (*p == '\0') | |
680 | break; | |
681 | ||
682 | th = &reply->transports[reply->nb_transports]; | |
683 | ||
115329f1 | 684 | get_word_sep(transport_protocol, sizeof(transport_protocol), |
1617ad97 | 685 | "/", &p); |
e1502118 | 686 | if (!strcasecmp (transport_protocol, "rtp")) { |
7ecc634e LB |
687 | get_word_sep(profile, sizeof(profile), "/;,", &p); |
688 | lower_transport[0] = '\0'; | |
689 | /* rtp/avp/<protocol> */ | |
690 | if (*p == '/') { | |
7ecc634e LB |
691 | get_word_sep(lower_transport, sizeof(lower_transport), |
692 | ";,", &p); | |
119b4668 RB |
693 | } |
694 | th->transport = RTSP_TRANSPORT_RTP; | |
695 | } else if (!strcasecmp (transport_protocol, "x-pn-tng") || | |
696 | !strcasecmp (transport_protocol, "x-real-rdt")) { | |
7ecc634e | 697 | /* x-pn-tng/<protocol> */ |
e1502118 LB |
698 | get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p); |
699 | profile[0] = '\0'; | |
119b4668 | 700 | th->transport = RTSP_TRANSPORT_RDT; |
1617ad97 | 701 | } |
b6892136 | 702 | if (!strcasecmp(lower_transport, "TCP")) |
90abbdba | 703 | th->lower_transport = RTSP_LOWER_TRANSPORT_TCP; |
1617ad97 | 704 | else |
90abbdba | 705 | th->lower_transport = RTSP_LOWER_TRANSPORT_UDP; |
115329f1 | 706 | |
1617ad97 FB |
707 | if (*p == ';') |
708 | p++; | |
709 | /* get each parameter */ | |
710 | while (*p != '\0' && *p != ',') { | |
711 | get_word_sep(parameter, sizeof(parameter), "=;,", &p); | |
712 | if (!strcmp(parameter, "port")) { | |
713 | if (*p == '=') { | |
714 | p++; | |
715 | rtsp_parse_range(&th->port_min, &th->port_max, &p); | |
716 | } | |
717 | } else if (!strcmp(parameter, "client_port")) { | |
718 | if (*p == '=') { | |
719 | p++; | |
115329f1 | 720 | rtsp_parse_range(&th->client_port_min, |
1617ad97 FB |
721 | &th->client_port_max, &p); |
722 | } | |
723 | } else if (!strcmp(parameter, "server_port")) { | |
724 | if (*p == '=') { | |
725 | p++; | |
115329f1 | 726 | rtsp_parse_range(&th->server_port_min, |
1617ad97 FB |
727 | &th->server_port_max, &p); |
728 | } | |
729 | } else if (!strcmp(parameter, "interleaved")) { | |
730 | if (*p == '=') { | |
731 | p++; | |
115329f1 | 732 | rtsp_parse_range(&th->interleaved_min, |
1617ad97 FB |
733 | &th->interleaved_max, &p); |
734 | } | |
735 | } else if (!strcmp(parameter, "multicast")) { | |
90abbdba RB |
736 | if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP) |
737 | th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST; | |
1617ad97 FB |
738 | } else if (!strcmp(parameter, "ttl")) { |
739 | if (*p == '=') { | |
740 | p++; | |
741 | th->ttl = strtol(p, (char **)&p, 10); | |
742 | } | |
743 | } else if (!strcmp(parameter, "destination")) { | |
744 | struct in_addr ipaddr; | |
745 | ||
746 | if (*p == '=') { | |
747 | p++; | |
748 | get_word_sep(buf, sizeof(buf), ";,", &p); | |
115329f1 | 749 | if (inet_aton(buf, &ipaddr)) |
1617ad97 FB |
750 | th->destination = ntohl(ipaddr.s_addr); |
751 | } | |
752 | } | |
753 | while (*p != ';' && *p != '\0' && *p != ',') | |
754 | p++; | |
755 | if (*p == ';') | |
756 | p++; | |
757 | } | |
758 | if (*p == ',') | |
759 | p++; | |
760 | ||
761 | reply->nb_transports++; | |
762 | } | |
763 | } | |
764 | ||
a9e534d5 | 765 | void rtsp_parse_line(RTSPMessageHeader *reply, const char *buf) |
1617ad97 FB |
766 | { |
767 | const char *p; | |
768 | ||
769 | /* NOTE: we do case independent match for broken servers */ | |
770 | p = buf; | |
f7d78f36 | 771 | if (av_stristart(p, "Session:", &p)) { |
30e79845 | 772 | int t; |
1617ad97 | 773 | get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p); |
30e79845 RB |
774 | if (av_stristart(p, ";timeout=", &p) && |
775 | (t = strtol(p, NULL, 10)) > 0) { | |
776 | reply->timeout = t; | |
777 | } | |
f7d78f36 | 778 | } else if (av_stristart(p, "Content-Length:", &p)) { |
1617ad97 | 779 | reply->content_length = strtol(p, NULL, 10); |
f7d78f36 | 780 | } else if (av_stristart(p, "Transport:", &p)) { |
1617ad97 | 781 | rtsp_parse_transport(reply, p); |
f7d78f36 | 782 | } else if (av_stristart(p, "CSeq:", &p)) { |
1617ad97 | 783 | reply->seq = strtol(p, NULL, 10); |
f7d78f36 | 784 | } else if (av_stristart(p, "Range:", &p)) { |
31693e00 | 785 | rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end); |
30aa6aed RB |
786 | } else if (av_stristart(p, "RealChallenge1:", &p)) { |
787 | skip_spaces(&p); | |
788 | av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge)); | |
7a86bafa RB |
789 | } else if (av_stristart(p, "Server:", &p)) { |
790 | skip_spaces(&p); | |
791 | av_strlcpy(reply->server, p, sizeof(reply->server)); | |
fccb1770 RB |
792 | } else if (av_stristart(p, "Notice:", &p) || |
793 | av_stristart(p, "X-Notice:", &p)) { | |
794 | reply->notice = strtol(p, NULL, 10); | |
d243ba30 LB |
795 | } else if (av_stristart(p, "Location:", &p)) { |
796 | skip_spaces(&p); | |
797 | av_strlcpy(reply->location, p , sizeof(reply->location)); | |
1617ad97 FB |
798 | } |
799 | } | |
800 | ||
b7b8fc34 FB |
801 | /* skip a RTP/TCP interleaved packet */ |
802 | static void rtsp_skip_packet(AVFormatContext *s) | |
803 | { | |
804 | RTSPState *rt = s->priv_data; | |
805 | int ret, len, len1; | |
806 | uint8_t buf[1024]; | |
807 | ||
0e848977 | 808 | ret = url_read_complete(rt->rtsp_hd, buf, 3); |
b7b8fc34 FB |
809 | if (ret != 3) |
810 | return; | |
80fb8234 | 811 | len = AV_RB16(buf + 1); |
67c9cd69 BC |
812 | |
813 | dprintf(s, "skipping RTP packet len=%d\n", len); | |
814 | ||
b7b8fc34 FB |
815 | /* skip payload */ |
816 | while (len > 0) { | |
817 | len1 = len; | |
818 | if (len1 > sizeof(buf)) | |
819 | len1 = sizeof(buf); | |
0e848977 | 820 | ret = url_read_complete(rt->rtsp_hd, buf, len1); |
b7b8fc34 FB |
821 | if (ret != len1) |
822 | return; | |
823 | len -= len1; | |
824 | } | |
825 | } | |
1617ad97 | 826 | |
7e726132 RB |
827 | /** |
828 | * Read a RTSP message from the server, or prepare to read data | |
829 | * packets if we're reading data interleaved over the TCP/RTSP | |
830 | * connection as well. | |
831 | * | |
832 | * @param s RTSP demuxer context | |
833 | * @param reply pointer where the RTSP message header will be stored | |
834 | * @param content_ptr pointer where the RTSP message body, if any, will | |
702d0a9e | 835 | * be stored (length is in reply) |
7e726132 RB |
836 | * @param return_on_interleaved_data whether the function may return if we |
837 | * encounter a data marker ('$'), which precedes data | |
838 | * packets over interleaved TCP/RTSP connections. If this | |
839 | * is set, this function will return 1 after encountering | |
840 | * a '$'. If it is not set, the function will skip any | |
841 | * data packets (if they are encountered), until a reply | |
842 | * has been fully parsed. If no more data is available | |
843 | * without parsing a reply, it will return an error. | |
844 | * | |
845 | * @returns 1 if a data packets is ready to be received, -1 on error, | |
846 | * and 0 on success. | |
847 | */ | |
c8965800 RB |
848 | static int rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply, |
849 | unsigned char **content_ptr, | |
850 | int return_on_interleaved_data) | |
1617ad97 FB |
851 | { |
852 | RTSPState *rt = s->priv_data; | |
853 | char buf[4096], buf1[1024], *q; | |
854 | unsigned char ch; | |
855 | const char *p; | |
7e726132 | 856 | int ret, content_length, line_count = 0; |
1617ad97 FB |
857 | unsigned char *content = NULL; |
858 | ||
d541a7d2 | 859 | memset(reply, 0, sizeof(*reply)); |
1617ad97 | 860 | |
1617ad97 | 861 | /* parse reply (XXX: use buffers) */ |
1617ad97 | 862 | rt->last_reply[0] = '\0'; |
c8965800 | 863 | for (;;) { |
1617ad97 | 864 | q = buf; |
c8965800 | 865 | for (;;) { |
0e848977 | 866 | ret = url_read_complete(rt->rtsp_hd, &ch, 1); |
7e726132 | 867 | #ifdef DEBUG_RTP_TCP |
67c9cd69 | 868 | dprintf(s, "ret=%d c=%02x [%c]\n", ret, ch, ch); |
7e726132 RB |
869 | #endif |
870 | if (ret != 1) | |
871 | return -1; | |
1617ad97 FB |
872 | if (ch == '\n') |
873 | break; | |
b7b8fc34 FB |
874 | if (ch == '$') { |
875 | /* XXX: only parse it if first char on line ? */ | |
7e726132 RB |
876 | if (return_on_interleaved_data) { |
877 | return 1; | |
878 | } else | |
b7b8fc34 FB |
879 | rtsp_skip_packet(s); |
880 | } else if (ch != '\r') { | |
1617ad97 FB |
881 | if ((q - buf) < sizeof(buf) - 1) |
882 | *q++ = ch; | |
883 | } | |
884 | } | |
885 | *q = '\0'; | |
67c9cd69 BC |
886 | |
887 | dprintf(s, "line='%s'\n", buf); | |
888 | ||
1617ad97 FB |
889 | /* test if last line */ |
890 | if (buf[0] == '\0') | |
891 | break; | |
892 | p = buf; | |
893 | if (line_count == 0) { | |
894 | /* get reply code */ | |
895 | get_word(buf1, sizeof(buf1), &p); | |
896 | get_word(buf1, sizeof(buf1), &p); | |
897 | reply->status_code = atoi(buf1); | |
898 | } else { | |
899 | rtsp_parse_line(reply, p); | |
75e61b0e MR |
900 | av_strlcat(rt->last_reply, p, sizeof(rt->last_reply)); |
901 | av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply)); | |
1617ad97 FB |
902 | } |
903 | line_count++; | |
904 | } | |
115329f1 | 905 | |
1617ad97 | 906 | if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0') |
75e61b0e | 907 | av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id)); |
115329f1 | 908 | |
1617ad97 FB |
909 | content_length = reply->content_length; |
910 | if (content_length > 0) { | |
911 | /* leave some room for a trailing '\0' (useful for simple parsing) */ | |
912 | content = av_malloc(content_length + 1); | |
0e848977 | 913 | (void)url_read_complete(rt->rtsp_hd, content, content_length); |
1617ad97 FB |
914 | content[content_length] = '\0'; |
915 | } | |
916 | if (content_ptr) | |
917 | *content_ptr = content; | |
e2e2e7dd AB |
918 | else |
919 | av_free(content); | |
7e726132 | 920 | |
fccb1770 RB |
921 | /* EOS */ |
922 | if (reply->notice == 2101 /* End-of-Stream Reached */ || | |
923 | reply->notice == 2104 /* Start-of-Stream Reached */ || | |
c8965800 | 924 | reply->notice == 2306 /* Continuous Feed Terminated */) { |
fccb1770 | 925 | rt->state = RTSP_STATE_IDLE; |
c8965800 | 926 | } else if (reply->notice >= 4400 && reply->notice < 5500) { |
fccb1770 | 927 | return AVERROR(EIO); /* data or server error */ |
c8965800 | 928 | } else if (reply->notice == 2401 /* Ticket Expired */ || |
fccb1770 RB |
929 | (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ ) |
930 | return AVERROR(EPERM); | |
931 | ||
7e726132 | 932 | return 0; |
1617ad97 FB |
933 | } |
934 | ||
2e13ecfe | 935 | static void rtsp_send_cmd_async(AVFormatContext *s, const char *cmd) |
29b9f58b RB |
936 | { |
937 | RTSPState *rt = s->priv_data; | |
938 | char buf[4096], buf1[1024]; | |
939 | ||
940 | rt->seq++; | |
941 | av_strlcpy(buf, cmd, sizeof(buf)); | |
942 | snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq); | |
943 | av_strlcat(buf, buf1, sizeof(buf)); | |
944 | if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) { | |
945 | snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id); | |
946 | av_strlcat(buf, buf1, sizeof(buf)); | |
947 | } | |
f9337897 RB |
948 | if (rt->auth_b64) |
949 | av_strlcatf(buf, sizeof(buf), | |
ba93ea6d RB |
950 | "Authorization: Basic %s\r\n", |
951 | rt->auth_b64); | |
29b9f58b | 952 | av_strlcat(buf, "\r\n", sizeof(buf)); |
67c9cd69 BC |
953 | |
954 | dprintf(s, "Sending:\n%s--\n", buf); | |
955 | ||
29b9f58b | 956 | url_write(rt->rtsp_hd, buf, strlen(buf)); |
30e79845 RB |
957 | rt->last_cmd_time = av_gettime(); |
958 | } | |
959 | ||
c8965800 RB |
960 | static void rtsp_send_cmd(AVFormatContext *s, |
961 | const char *cmd, RTSPMessageHeader *reply, | |
962 | unsigned char **content_ptr) | |
30e79845 | 963 | { |
2e13ecfe | 964 | rtsp_send_cmd_async(s, cmd); |
29b9f58b | 965 | |
7e726132 | 966 | rtsp_read_reply(s, reply, content_ptr, 0); |
29b9f58b RB |
967 | } |
968 | ||
53620bba RB |
969 | /** |
970 | * @returns 0 on success, <0 on error, 1 if protocol is unavailable. | |
971 | */ | |
c8965800 RB |
972 | static int make_setup_request(AVFormatContext *s, const char *host, int port, |
973 | int lower_transport, const char *real_challenge) | |
1617ad97 FB |
974 | { |
975 | RTSPState *rt = s->priv_data; | |
f830c9a4 | 976 | int rtx, j, i, err, interleave = 0; |
1617ad97 | 977 | RTSPStream *rtsp_st; |
a9e534d5 | 978 | RTSPMessageHeader reply1, *reply = &reply1; |
53620bba | 979 | char cmd[2048]; |
e9dea59f RB |
980 | const char *trans_pref; |
981 | ||
119b4668 | 982 | if (rt->transport == RTSP_TRANSPORT_RDT) |
e9dea59f RB |
983 | trans_pref = "x-pn-tng"; |
984 | else | |
985 | trans_pref = "RTP/AVP"; | |
115329f1 | 986 | |
30e79845 RB |
987 | /* default timeout: 1 minute */ |
988 | rt->timeout = 60; | |
989 | ||
1617ad97 FB |
990 | /* for each stream, make the setup request */ |
991 | /* XXX: we assume the same server is used for the control of each | |
c8965800 | 992 | * RTSP stream */ |
d1ccf0e0 | 993 | |
c8965800 | 994 | for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) { |
1617ad97 FB |
995 | char transport[2048]; |
996 | ||
f830c9a4 RB |
997 | /** |
998 | * WMS serves all UDP data over a single connection, the RTX, which | |
999 | * isn't necessarily the first in the SDP but has to be the first | |
1000 | * to be set up, else the second/third SETUP will fail with a 461. | |
1001 | */ | |
1002 | if (lower_transport == RTSP_LOWER_TRANSPORT_UDP && | |
1003 | rt->server_type == RTSP_SERVER_WMS) { | |
1004 | if (i == 0) { | |
1005 | /* rtx first */ | |
1006 | for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) { | |
1007 | int len = strlen(rt->rtsp_streams[rtx]->control_url); | |
1008 | if (len >= 4 && | |
c8965800 RB |
1009 | !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, |
1010 | "/rtx")) | |
f830c9a4 RB |
1011 | break; |
1012 | } | |
1013 | if (rtx == rt->nb_rtsp_streams) | |
1014 | return -1; /* no RTX found */ | |
1015 | rtsp_st = rt->rtsp_streams[rtx]; | |
1016 | } else | |
1017 | rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1]; | |
1018 | } else | |
2fea9650 | 1019 | rtsp_st = rt->rtsp_streams[i]; |
1617ad97 | 1020 | |
1617ad97 | 1021 | /* RTP/UDP */ |
90abbdba | 1022 | if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) { |
85fb7b34 | 1023 | char buf[256]; |
85fb7b34 | 1024 | |
f830c9a4 RB |
1025 | if (rt->server_type == RTSP_SERVER_WMS && i > 1) { |
1026 | port = reply->transports[0].client_port_min; | |
1027 | goto have_port; | |
1028 | } | |
1029 | ||
85fb7b34 | 1030 | /* first try in specified port range */ |
d1ccf0e0 | 1031 | if (RTSP_RTP_PORT_MIN != 0) { |
c8965800 RB |
1032 | while (j <= RTSP_RTP_PORT_MAX) { |
1033 | snprintf(buf, sizeof(buf), "rtp://%s?localport=%d", | |
1034 | host, j); | |
1035 | /* we will use two ports per rtp stream (rtp and rtcp) */ | |
1036 | j += 2; | |
1037 | if (url_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) | |
85fb7b34 FB |
1038 | goto rtp_opened; |
1039 | } | |
1617ad97 | 1040 | } |
85fb7b34 | 1041 | |
c8965800 RB |
1042 | #if 0 |
1043 | /* then try on any port */ | |
1044 | if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) { | |
1045 | err = AVERROR_INVALIDDATA; | |
1046 | goto fail; | |
1047 | } | |
1048 | #endif | |
85fb7b34 FB |
1049 | |
1050 | rtp_opened: | |
8b1ab7bf | 1051 | port = rtp_get_local_port(rtsp_st->rtp_handle); |
f830c9a4 | 1052 | have_port: |
0ad306bc | 1053 | snprintf(transport, sizeof(transport) - 1, |
eee2cbff RB |
1054 | "%s/UDP;", trans_pref); |
1055 | if (rt->server_type != RTSP_SERVER_REAL) | |
1056 | av_strlcat(transport, "unicast;", sizeof(transport)); | |
1057 | av_strlcatf(transport, sizeof(transport), | |
1058 | "client_port=%d", port); | |
f830c9a4 RB |
1059 | if (rt->transport == RTSP_TRANSPORT_RTP && |
1060 | !(rt->server_type == RTSP_SERVER_WMS && i > 0)) | |
e9dea59f | 1061 | av_strlcatf(transport, sizeof(transport), "-%d", port + 1); |
1617ad97 FB |
1062 | } |
1063 | ||
1064 | /* RTP/TCP */ | |
90abbdba | 1065 | else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) { |
090438cc RB |
1066 | /** For WMS streams, the application streams are only used for |
1067 | * UDP. When trying to set it up for TCP streams, the server | |
1068 | * will return an error. Therefore, we skip those streams. */ | |
1069 | if (rt->server_type == RTSP_SERVER_WMS && | |
c8965800 RB |
1070 | s->streams[rtsp_st->stream_index]->codec->codec_type == |
1071 | CODEC_TYPE_DATA) | |
090438cc | 1072 | continue; |
0ad306bc | 1073 | snprintf(transport, sizeof(transport) - 1, |
d1c6e47c RB |
1074 | "%s/TCP;", trans_pref); |
1075 | if (rt->server_type == RTSP_SERVER_WMS) | |
1076 | av_strlcat(transport, "unicast;", sizeof(transport)); | |
1077 | av_strlcatf(transport, sizeof(transport), | |
1078 | "interleaved=%d-%d", | |
1079 | interleave, interleave + 1); | |
1080 | interleave += 2; | |
1617ad97 FB |
1081 | } |
1082 | ||
90abbdba | 1083 | else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) { |
0ad306bc | 1084 | snprintf(transport, sizeof(transport) - 1, |
e9dea59f | 1085 | "%s/UDP;multicast", trans_pref); |
1617ad97 | 1086 | } |
d1c6e47c RB |
1087 | if (rt->server_type == RTSP_SERVER_REAL || |
1088 | rt->server_type == RTSP_SERVER_WMS) | |
e9dea59f | 1089 | av_strlcat(transport, ";mode=play", sizeof(transport)); |
115329f1 | 1090 | snprintf(cmd, sizeof(cmd), |
b6892136 FB |
1091 | "SETUP %s RTSP/1.0\r\n" |
1092 | "Transport: %s\r\n", | |
1617ad97 | 1093 | rtsp_st->control_url, transport); |
2e889ae4 | 1094 | if (i == 0 && rt->server_type == RTSP_SERVER_REAL) { |
e9dea59f RB |
1095 | char real_res[41], real_csum[9]; |
1096 | ff_rdt_calc_response_and_checksum(real_res, real_csum, | |
1097 | real_challenge); | |
1098 | av_strlcatf(cmd, sizeof(cmd), | |
1099 | "If-Match: %s\r\n" | |
1100 | "RealChallenge2: %s, sd=%s\r\n", | |
1101 | rt->session_id, real_res, real_csum); | |
1102 | } | |
1617ad97 | 1103 | rtsp_send_cmd(s, cmd, reply, NULL); |
8a8754d8 RB |
1104 | if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) { |
1105 | err = 1; | |
1106 | goto fail; | |
7e6ca34f RB |
1107 | } else if (reply->status_code != RTSP_STATUS_OK || |
1108 | reply->nb_transports != 1) { | |
1617ad97 FB |
1109 | err = AVERROR_INVALIDDATA; |
1110 | goto fail; | |
1111 | } | |
1112 | ||
1113 | /* XXX: same protocol for all streams is required */ | |
1114 | if (i > 0) { | |
119b4668 RB |
1115 | if (reply->transports[0].lower_transport != rt->lower_transport || |
1116 | reply->transports[0].transport != rt->transport) { | |
1617ad97 FB |
1117 | err = AVERROR_INVALIDDATA; |
1118 | goto fail; | |
1119 | } | |
1120 | } else { | |
90abbdba | 1121 | rt->lower_transport = reply->transports[0].lower_transport; |
119b4668 | 1122 | rt->transport = reply->transports[0].transport; |
1617ad97 FB |
1123 | } |
1124 | ||
1125 | /* close RTP connection if not choosen */ | |
90abbdba RB |
1126 | if (reply->transports[0].lower_transport != RTSP_LOWER_TRANSPORT_UDP && |
1127 | (lower_transport == RTSP_LOWER_TRANSPORT_UDP)) { | |
8b1ab7bf FB |
1128 | url_close(rtsp_st->rtp_handle); |
1129 | rtsp_st->rtp_handle = NULL; | |
1617ad97 FB |
1130 | } |
1131 | ||
90abbdba RB |
1132 | switch(reply->transports[0].lower_transport) { |
1133 | case RTSP_LOWER_TRANSPORT_TCP: | |
1617ad97 FB |
1134 | rtsp_st->interleaved_min = reply->transports[0].interleaved_min; |
1135 | rtsp_st->interleaved_max = reply->transports[0].interleaved_max; | |
1136 | break; | |
115329f1 | 1137 | |
c8965800 RB |
1138 | case RTSP_LOWER_TRANSPORT_UDP: { |
1139 | char url[1024]; | |
1140 | ||
1141 | /* XXX: also use address if specified */ | |
1142 | snprintf(url, sizeof(url), "rtp://%s:%d", | |
1143 | host, reply->transports[0].server_port_min); | |
1144 | if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && | |
1145 | rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) { | |
1146 | err = AVERROR_INVALIDDATA; | |
1147 | goto fail; | |
1617ad97 FB |
1148 | } |
1149 | break; | |
c8965800 RB |
1150 | } |
1151 | case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: { | |
1152 | char url[1024]; | |
1153 | struct in_addr in; | |
1154 | int port, ttl; | |
1155 | ||
1156 | if (reply->transports[0].destination) { | |
1157 | in.s_addr = htonl(reply->transports[0].destination); | |
1158 | port = reply->transports[0].port_min; | |
1159 | ttl = reply->transports[0].ttl; | |
1160 | } else { | |
1161 | in = rtsp_st->sdp_ip; | |
1162 | port = rtsp_st->sdp_port; | |
1163 | ttl = rtsp_st->sdp_ttl; | |
1164 | } | |
1165 | snprintf(url, sizeof(url), "rtp://%s:%d?ttl=%d", | |
1166 | inet_ntoa(in), port, ttl); | |
1167 | if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) { | |
1168 | err = AVERROR_INVALIDDATA; | |
1169 | goto fail; | |
1617ad97 FB |
1170 | } |
1171 | break; | |
1172 | } | |
c8965800 | 1173 | } |
d1ccf0e0 | 1174 | |
ee0cb67f | 1175 | if ((err = rtsp_open_transport_ctx(s, rtsp_st))) |
8b1ab7bf | 1176 | goto fail; |
1617ad97 FB |
1177 | } |
1178 | ||
30e79845 RB |
1179 | if (reply->timeout > 0) |
1180 | rt->timeout = reply->timeout; | |
1181 | ||
2e889ae4 | 1182 | if (rt->server_type == RTSP_SERVER_REAL) |
1256d16b RB |
1183 | rt->need_subscription = 1; |
1184 | ||
53620bba RB |
1185 | return 0; |
1186 | ||
1187 | fail: | |
c8965800 | 1188 | for (i = 0; i < rt->nb_rtsp_streams; i++) { |
8a8754d8 RB |
1189 | if (rt->rtsp_streams[i]->rtp_handle) { |
1190 | url_close(rt->rtsp_streams[i]->rtp_handle); | |
1191 | rt->rtsp_streams[i]->rtp_handle = NULL; | |
1192 | } | |
1193 | } | |
53620bba RB |
1194 | return err; |
1195 | } | |
1196 | ||
1ced9da3 LA |
1197 | static int rtsp_read_play(AVFormatContext *s) |
1198 | { | |
1199 | RTSPState *rt = s->priv_data; | |
1200 | RTSPMessageHeader reply1, *reply = &reply1; | |
1201 | char cmd[1024]; | |
1202 | ||
1203 | av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state); | |
1204 | ||
1205 | if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) { | |
1206 | if (rt->state == RTSP_STATE_PAUSED) { | |
1207 | snprintf(cmd, sizeof(cmd), | |
1208 | "PLAY %s RTSP/1.0\r\n", | |
00eb13e0 | 1209 | rt->control_uri); |
1ced9da3 LA |
1210 | } else { |
1211 | snprintf(cmd, sizeof(cmd), | |
1212 | "PLAY %s RTSP/1.0\r\n" | |
1213 | "Range: npt=%0.3f-\r\n", | |
00eb13e0 | 1214 | rt->control_uri, |
1ced9da3 LA |
1215 | (double)rt->seek_timestamp / AV_TIME_BASE); |
1216 | } | |
1217 | rtsp_send_cmd(s, cmd, reply, NULL); | |
1218 | if (reply->status_code != RTSP_STATUS_OK) { | |
1219 | return -1; | |
1220 | } | |
1221 | } | |
1222 | rt->state = RTSP_STATE_PLAYING; | |
1223 | return 0; | |
1224 | } | |
1225 | ||
53620bba RB |
1226 | static int rtsp_read_header(AVFormatContext *s, |
1227 | AVFormatParameters *ap) | |
1228 | { | |
1229 | RTSPState *rt = s->priv_data; | |
921da217 LB |
1230 | char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128]; |
1231 | char *option_list, *option, *filename; | |
53620bba RB |
1232 | URLContext *rtsp_hd; |
1233 | int port, ret, err; | |
a9e534d5 | 1234 | RTSPMessageHeader reply1, *reply = &reply1; |
53620bba | 1235 | unsigned char *content = NULL; |
90abbdba | 1236 | int lower_transport_mask = 0; |
1cf151e9 | 1237 | char real_challenge[64]; |
c8965800 | 1238 | redirect: |
53620bba | 1239 | /* extract hostname and port */ |
f9337897 | 1240 | url_split(NULL, 0, auth, sizeof(auth), |
53620bba | 1241 | host, sizeof(host), &port, path, sizeof(path), s->filename); |
f9337897 RB |
1242 | if (*auth) { |
1243 | int auth_len = strlen(auth), b64_len = ((auth_len + 2) / 3) * 4 + 1; | |
1244 | ||
1245 | if (!(rt->auth_b64 = av_malloc(b64_len))) | |
1246 | return AVERROR(ENOMEM); | |
1247 | if (!av_base64_encode(rt->auth_b64, b64_len, auth, auth_len)) { | |
1248 | err = AVERROR(EINVAL); | |
1249 | goto fail; | |
1250 | } | |
1251 | } | |
53620bba RB |
1252 | if (port < 0) |
1253 | port = RTSP_DEFAULT_PORT; | |
1254 | ||
1255 | /* search for options */ | |
1256 | option_list = strchr(path, '?'); | |
1257 | if (option_list) { | |
921da217 | 1258 | filename = strchr(s->filename, '?'); |
c8965800 | 1259 | while (option_list) { |
53620bba | 1260 | /* move the option pointer */ |
921da217 | 1261 | option = ++option_list; |
53620bba RB |
1262 | option_list = strchr(option_list, '&'); |
1263 | if (option_list) | |
921da217 LB |
1264 | *option_list = 0; |
1265 | ||
53620bba | 1266 | /* handle the options */ |
c8965800 | 1267 | if (!strcmp(option, "udp")) { |
90abbdba | 1268 | lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP); |
c8965800 | 1269 | } else if (!strcmp(option, "multicast")) { |
90abbdba | 1270 | lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST); |
c8965800 | 1271 | } else if (!strcmp(option, "tcp")) { |
90abbdba | 1272 | lower_transport_mask = (1<< RTSP_LOWER_TRANSPORT_TCP); |
c8965800 | 1273 | } else { |
921da217 LB |
1274 | strcpy(++filename, option); |
1275 | filename += strlen(option); | |
1276 | if (option_list) *filename = '&'; | |
1277 | } | |
53620bba | 1278 | } |
921da217 | 1279 | *filename = 0; |
53620bba RB |
1280 | } |
1281 | ||
90abbdba | 1282 | if (!lower_transport_mask) |
2a1d51c5 | 1283 | lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1; |
53620bba RB |
1284 | |
1285 | /* open the tcp connexion */ | |
1286 | snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port); | |
f9337897 RB |
1287 | if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) { |
1288 | err = AVERROR(EIO); | |
1289 | goto fail; | |
1290 | } | |
53620bba RB |
1291 | rt->rtsp_hd = rtsp_hd; |
1292 | rt->seq = 0; | |
1293 | ||
c8965800 RB |
1294 | /* request options supported by the server; this also detects server |
1295 | * type */ | |
00eb13e0 AS |
1296 | av_strlcpy(rt->control_uri, s->filename, |
1297 | sizeof(rt->control_uri)); | |
1cf151e9 RB |
1298 | for (rt->server_type = RTSP_SERVER_RTP;;) { |
1299 | snprintf(cmd, sizeof(cmd), | |
1300 | "OPTIONS %s RTSP/1.0\r\n", s->filename); | |
2e889ae4 | 1301 | if (rt->server_type == RTSP_SERVER_REAL) |
1cf151e9 RB |
1302 | av_strlcat(cmd, |
1303 | /** | |
1304 | * The following entries are required for proper | |
1305 | * streaming from a Realmedia server. They are | |
1306 | * interdependent in some way although we currently | |
1307 | * don't quite understand how. Values were copied | |
1308 | * from mplayer SVN r23589. | |
1309 | * @param CompanyID is a 16-byte ID in base64 | |
1310 | * @param ClientChallenge is a 16-byte ID in hex | |
1311 | */ | |
1312 | "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n" | |
1313 | "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n" | |
1314 | "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n" | |
1315 | "GUID: 00000000-0000-0000-0000-000000000000\r\n", | |
1316 | sizeof(cmd)); | |
1317 | rtsp_send_cmd(s, cmd, reply, NULL); | |
1318 | if (reply->status_code != RTSP_STATUS_OK) { | |
1319 | err = AVERROR_INVALIDDATA; | |
1320 | goto fail; | |
1321 | } | |
1322 | ||
1323 | /* detect server type if not standard-compliant RTP */ | |
2e889ae4 RB |
1324 | if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) { |
1325 | rt->server_type = RTSP_SERVER_REAL; | |
1cf151e9 | 1326 | continue; |
7a86bafa RB |
1327 | } else if (!strncasecmp(reply->server, "WMServer/", 9)) { |
1328 | rt->server_type = RTSP_SERVER_WMS; | |
c8965800 | 1329 | } else if (rt->server_type == RTSP_SERVER_REAL) |
1cf151e9 | 1330 | strcpy(real_challenge, reply->real_challenge); |
1cf151e9 RB |
1331 | break; |
1332 | } | |
1333 | ||
53620bba RB |
1334 | /* describe the stream */ |
1335 | snprintf(cmd, sizeof(cmd), | |
1336 | "DESCRIBE %s RTSP/1.0\r\n" | |
1337 | "Accept: application/sdp\r\n", | |
1338 | s->filename); | |
2e889ae4 | 1339 | if (rt->server_type == RTSP_SERVER_REAL) { |
897ade1b RB |
1340 | /** |
1341 | * The Require: attribute is needed for proper streaming from | |
1342 | * Realmedia servers. | |
1343 | */ | |
1344 | av_strlcat(cmd, | |
1345 | "Require: com.real.retain-entity-for-setup\r\n", | |
1346 | sizeof(cmd)); | |
1347 | } | |
53620bba RB |
1348 | rtsp_send_cmd(s, cmd, reply, &content); |
1349 | if (!content) { | |
1350 | err = AVERROR_INVALIDDATA; | |
1351 | goto fail; | |
1352 | } | |
1353 | if (reply->status_code != RTSP_STATUS_OK) { | |
1354 | err = AVERROR_INVALIDDATA; | |
1355 | goto fail; | |
1356 | } | |
1357 | ||
1358 | /* now we got the SDP description, we parse it */ | |
1359 | ret = sdp_parse(s, (const char *)content); | |
1360 | av_freep(&content); | |
1361 | if (ret < 0) { | |
1362 | err = AVERROR_INVALIDDATA; | |
1363 | goto fail; | |
1364 | } | |
1365 | ||
8a8754d8 | 1366 | do { |
c8965800 RB |
1367 | int lower_transport = ff_log2_tab[lower_transport_mask & |
1368 | ~(lower_transport_mask - 1)]; | |
8a8754d8 | 1369 | |
90abbdba | 1370 | err = make_setup_request(s, host, port, lower_transport, |
2e889ae4 | 1371 | rt->server_type == RTSP_SERVER_REAL ? |
e9dea59f | 1372 | real_challenge : NULL); |
8a8754d8 | 1373 | if (err < 0) |
7e6ca34f | 1374 | goto fail; |
90abbdba RB |
1375 | lower_transport_mask &= ~(1 << lower_transport); |
1376 | if (lower_transport_mask == 0 && err == 1) { | |
5ee0e139 | 1377 | err = AVERROR(FF_NETERROR(EPROTONOSUPPORT)); |
8a8754d8 RB |
1378 | goto fail; |
1379 | } | |
1380 | } while (err); | |
53620bba | 1381 | |
ff762d6e | 1382 | rt->state = RTSP_STATE_IDLE; |
c8965800 | 1383 | rt->seek_timestamp = 0; /* default is to start stream at position zero */ |
c04c3282 | 1384 | if (ap->initial_pause) { |
ff762d6e FB |
1385 | /* do not start immediately */ |
1386 | } else { | |
1387 | if (rtsp_read_play(s) < 0) { | |
1388 | err = AVERROR_INVALIDDATA; | |
1617ad97 FB |
1389 | goto fail; |
1390 | } | |
1391 | } | |
1617ad97 FB |
1392 | return 0; |
1393 | fail: | |
8b1ab7bf | 1394 | rtsp_close_streams(rt); |
1617ad97 FB |
1395 | av_freep(&content); |
1396 | url_close(rt->rtsp_hd); | |
d243ba30 LB |
1397 | if (reply->status_code >=300 && reply->status_code < 400) { |
1398 | av_strlcpy(s->filename, reply->location, sizeof(s->filename)); | |
1399 | av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n", | |
1400 | reply->status_code, | |
1401 | s->filename); | |
1402 | goto redirect; | |
1403 | } | |
1617ad97 FB |
1404 | return err; |
1405 | } | |
1406 | ||
0e59034e RB |
1407 | static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st, |
1408 | uint8_t *buf, int buf_size) | |
1409 | { | |
1410 | RTSPState *rt = s->priv_data; | |
1411 | RTSPStream *rtsp_st; | |
1412 | fd_set rfds; | |
1413 | int fd, fd_max, n, i, ret, tcp_fd; | |
1414 | struct timeval tv; | |
1415 | ||
c8965800 | 1416 | for (;;) { |
0e59034e RB |
1417 | if (url_interrupt_cb()) |
1418 | return AVERROR(EINTR); | |
1419 | FD_ZERO(&rfds); | |
1420 | if (rt->rtsp_hd) { | |
1421 | tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd); | |
1422 | FD_SET(tcp_fd, &rfds); | |
1423 | } else { | |
1424 | fd_max = 0; | |
1425 | tcp_fd = -1; | |
1426 | } | |
c8965800 | 1427 | for (i = 0; i < rt->nb_rtsp_streams; i++) { |
0e59034e RB |
1428 | rtsp_st = rt->rtsp_streams[i]; |
1429 | if (rtsp_st->rtp_handle) { | |
1430 | /* currently, we cannot probe RTCP handle because of | |
1431 | * blocking restrictions */ | |
1432 | fd = url_get_file_handle(rtsp_st->rtp_handle); | |
1433 | if (fd > fd_max) | |
1434 | fd_max = fd; | |
1435 | FD_SET(fd, &rfds); | |
1436 | } | |
1437 | } | |
1438 | tv.tv_sec = 0; | |
1439 | tv.tv_usec = 100 * 1000; | |
1440 | n = select(fd_max + 1, &rfds, NULL, NULL, &tv); | |
1441 | if (n > 0) { | |
c8965800 | 1442 | for (i = 0; i < rt->nb_rtsp_streams; i++) { |
0e59034e RB |
1443 | rtsp_st = rt->rtsp_streams[i]; |
1444 | if (rtsp_st->rtp_handle) { | |
1445 | fd = url_get_file_handle(rtsp_st->rtp_handle); | |
1446 | if (FD_ISSET(fd, &rfds)) { | |
1447 | ret = url_read(rtsp_st->rtp_handle, buf, buf_size); | |
1448 | if (ret > 0) { | |
1449 | *prtsp_st = rtsp_st; | |
1450 | return ret; | |
1451 | } | |
1452 | } | |
1453 | } | |
1454 | } | |
1455 | #if CONFIG_RTSP_DEMUXER | |
27000636 | 1456 | if (tcp_fd != -1 && FD_ISSET(tcp_fd, &rfds)) { |
0e59034e RB |
1457 | RTSPMessageHeader reply; |
1458 | ||
1459 | rtsp_read_reply(s, &reply, NULL, 0); | |
1460 | /* XXX: parse message */ | |
1461 | if (rt->state != RTSP_STATE_PLAYING) | |
1462 | return 0; | |
1463 | } | |
1464 | #endif | |
1465 | } | |
1466 | } | |
1467 | } | |
1468 | ||
8b1ab7bf FB |
1469 | static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st, |
1470 | uint8_t *buf, int buf_size) | |
1617ad97 FB |
1471 | { |
1472 | RTSPState *rt = s->priv_data; | |
b6892136 | 1473 | int id, len, i, ret; |
1617ad97 | 1474 | RTSPStream *rtsp_st; |
1617ad97 | 1475 | |
b6892136 | 1476 | #ifdef DEBUG_RTP_TCP |
67c9cd69 | 1477 | dprintf(s, "tcp_read_packet:\n"); |
b6892136 | 1478 | #endif |
c8965800 RB |
1479 | redo: |
1480 | for (;;) { | |
7e726132 RB |
1481 | RTSPMessageHeader reply; |
1482 | ||
1483 | ret = rtsp_read_reply(s, &reply, NULL, 1); | |
1484 | if (ret == -1) | |
8b1ab7bf | 1485 | return -1; |
7e726132 | 1486 | if (ret == 1) /* received '$' */ |
1617ad97 | 1487 | break; |
7e726132 | 1488 | /* XXX: parse message */ |
fccb1770 RB |
1489 | if (rt->state != RTSP_STATE_PLAYING) |
1490 | return 0; | |
1617ad97 | 1491 | } |
0e848977 | 1492 | ret = url_read_complete(rt->rtsp_hd, buf, 3); |
b6892136 | 1493 | if (ret != 3) |
8b1ab7bf | 1494 | return -1; |
c8965800 | 1495 | id = buf[0]; |
80fb8234 | 1496 | len = AV_RB16(buf + 1); |
b6892136 | 1497 | #ifdef DEBUG_RTP_TCP |
67c9cd69 | 1498 | dprintf(s, "id=%d len=%d\n", id, len); |
b6892136 | 1499 | #endif |
8b1ab7bf | 1500 | if (len > buf_size || len < 12) |
1617ad97 FB |
1501 | goto redo; |
1502 | /* get the data */ | |
0e848977 | 1503 | ret = url_read_complete(rt->rtsp_hd, buf, len); |
b6892136 | 1504 | if (ret != len) |
8b1ab7bf | 1505 | return -1; |
985b05d3 | 1506 | if (rt->transport == RTSP_TRANSPORT_RDT && |
114732f4 | 1507 | ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0) |
985b05d3 | 1508 | return -1; |
115329f1 | 1509 | |
1617ad97 | 1510 | /* find the matching stream */ |
c8965800 | 1511 | for (i = 0; i < rt->nb_rtsp_streams; i++) { |
8b1ab7bf | 1512 | rtsp_st = rt->rtsp_streams[i]; |
115329f1 DB |
1513 | if (id >= rtsp_st->interleaved_min && |
1514 | id <= rtsp_st->interleaved_max) | |
1617ad97 FB |
1515 | goto found; |
1516 | } | |
1517 | goto redo; | |
c8965800 | 1518 | found: |
8b1ab7bf FB |
1519 | *prtsp_st = rtsp_st; |
1520 | return len; | |
1617ad97 FB |
1521 | } |
1522 | ||
0e59034e RB |
1523 | static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt) |
1524 | { | |
1525 | RTSPState *rt = s->priv_data; | |
1526 | int ret, len; | |
1527 | uint8_t buf[10 * RTP_MAX_PACKET_LENGTH]; | |
1528 | RTSPStream *rtsp_st; | |
1529 | ||
1530 | /* get next frames from the same RTP packet */ | |
1531 | if (rt->cur_transport_priv) { | |
c8965800 | 1532 | if (rt->transport == RTSP_TRANSPORT_RDT) { |
0e59034e | 1533 | ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0); |
c8965800 | 1534 | } else |
0e59034e RB |
1535 | ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0); |
1536 | if (ret == 0) { | |
1537 | rt->cur_transport_priv = NULL; | |
1538 | return 0; | |
1539 | } else if (ret == 1) { | |
1540 | return 0; | |
c8965800 | 1541 | } else |
0e59034e | 1542 | rt->cur_transport_priv = NULL; |
0e59034e RB |
1543 | } |
1544 | ||
1545 | /* read next RTP packet */ | |
1546 | redo: | |
1547 | switch(rt->lower_transport) { | |
1548 | default: | |
1549 | #if CONFIG_RTSP_DEMUXER | |
1550 | case RTSP_LOWER_TRANSPORT_TCP: | |
1551 | len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf)); | |
1552 | break; | |
1553 | #endif | |
1554 | case RTSP_LOWER_TRANSPORT_UDP: | |
1555 | case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: | |
1556 | len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf)); | |
1557 | if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP) | |
1558 | rtp_check_and_send_back_rr(rtsp_st->transport_priv, len); | |
1559 | break; | |
1560 | } | |
1561 | if (len < 0) | |
1562 | return len; | |
1563 | if (len == 0) | |
1564 | return AVERROR_EOF; | |
c8965800 | 1565 | if (rt->transport == RTSP_TRANSPORT_RDT) { |
0e59034e | 1566 | ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len); |
c8965800 | 1567 | } else |
0e59034e RB |
1568 | ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len); |
1569 | if (ret < 0) | |
1570 | goto redo; | |
c8965800 | 1571 | if (ret == 1) |
0e59034e RB |
1572 | /* more packets may follow, so we save the RTP context */ |
1573 | rt->cur_transport_priv = rtsp_st->transport_priv; | |
0e59034e RB |
1574 | |
1575 | return ret; | |
1576 | } | |
1577 | ||
c8965800 | 1578 | static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt) |
1617ad97 FB |
1579 | { |
1580 | RTSPState *rt = s->priv_data; | |
98713182 | 1581 | int ret; |
30e79845 RB |
1582 | RTSPMessageHeader reply1, *reply = &reply1; |
1583 | char cmd[1024]; | |
8b1ab7bf | 1584 | |
572c6a38 | 1585 | if (rt->server_type == RTSP_SERVER_REAL) { |
1256d16b | 1586 | int i; |
572c6a38 | 1587 | enum AVDiscard cache[MAX_STREAMS]; |
1256d16b | 1588 | |
572c6a38 RB |
1589 | for (i = 0; i < s->nb_streams; i++) |
1590 | cache[i] = s->streams[i]->discard; | |
1591 | ||
1592 | if (!rt->need_subscription) { | |
1593 | if (memcmp (cache, rt->real_setup_cache, | |
1594 | sizeof(enum AVDiscard) * s->nb_streams)) { | |
8b9457de | 1595 | snprintf(cmd, sizeof(cmd), |
7eaa646f RB |
1596 | "SET_PARAMETER %s RTSP/1.0\r\n" |
1597 | "Unsubscribe: %s\r\n", | |
00eb13e0 | 1598 | rt->control_uri, rt->last_subscription); |
572c6a38 RB |
1599 | rtsp_send_cmd(s, cmd, reply, NULL); |
1600 | if (reply->status_code != RTSP_STATUS_OK) | |
1601 | return AVERROR_INVALIDDATA; | |
1602 | rt->need_subscription = 1; | |
1603 | } | |
1256d16b | 1604 | } |
1256d16b | 1605 | |
572c6a38 RB |
1606 | if (rt->need_subscription) { |
1607 | int r, rule_nr, first = 1; | |
1608 | ||
1609 | memcpy(rt->real_setup_cache, cache, | |
1610 | sizeof(enum AVDiscard) * s->nb_streams); | |
1611 | rt->last_subscription[0] = 0; | |
1612 | ||
1613 | snprintf(cmd, sizeof(cmd), | |
1614 | "SET_PARAMETER %s RTSP/1.0\r\n" | |
1615 | "Subscribe: ", | |
00eb13e0 | 1616 | rt->control_uri); |
572c6a38 RB |
1617 | for (i = 0; i < rt->nb_rtsp_streams; i++) { |
1618 | rule_nr = 0; | |
1619 | for (r = 0; r < s->nb_streams; r++) { | |
1620 | if (s->streams[r]->priv_data == rt->rtsp_streams[i]) { | |
1621 | if (s->streams[r]->discard != AVDISCARD_ALL) { | |
1622 | if (!first) | |
1623 | av_strlcat(rt->last_subscription, ",", | |
1624 | sizeof(rt->last_subscription)); | |
1625 | ff_rdt_subscribe_rule( | |
1626 | rt->last_subscription, | |
1627 | sizeof(rt->last_subscription), i, rule_nr); | |
1628 | first = 0; | |
1629 | } | |
1630 | rule_nr++; | |
1631 | } | |
1632 | } | |
1633 | } | |
1634 | av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription); | |
1635 | rtsp_send_cmd(s, cmd, reply, NULL); | |
1636 | if (reply->status_code != RTSP_STATUS_OK) | |
1637 | return AVERROR_INVALIDDATA; | |
1638 | rt->need_subscription = 0; | |
1639 | ||
1640 | if (rt->state == RTSP_STATE_PLAYING) | |
1641 | rtsp_read_play (s); | |
1642 | } | |
1256d16b RB |
1643 | } |
1644 | ||
d7250724 | 1645 | ret = rtsp_fetch_packet(s, pkt); |
c8965800 | 1646 | if (ret < 0) |
98713182 | 1647 | return ret; |
30e79845 RB |
1648 | |
1649 | /* send dummy request to keep TCP connection alive */ | |
1650 | if ((rt->server_type == RTSP_SERVER_WMS || | |
1651 | rt->server_type == RTSP_SERVER_REAL) && | |
1652 | (av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) { | |
1653 | if (rt->server_type == RTSP_SERVER_WMS) { | |
1654 | snprintf(cmd, sizeof(cmd) - 1, | |
1655 | "GET_PARAMETER %s RTSP/1.0\r\n", | |
00eb13e0 | 1656 | rt->control_uri); |
2e13ecfe | 1657 | rtsp_send_cmd_async(s, cmd); |
30e79845 | 1658 | } else { |
2e13ecfe | 1659 | rtsp_send_cmd_async(s, "OPTIONS * RTSP/1.0\r\n"); |
30e79845 RB |
1660 | } |
1661 | } | |
1662 | ||
8b1ab7bf | 1663 | return 0; |
1617ad97 FB |
1664 | } |
1665 | ||
ff762d6e FB |
1666 | /* pause the stream */ |
1667 | static int rtsp_read_pause(AVFormatContext *s) | |
b7b8fc34 | 1668 | { |
ff762d6e | 1669 | RTSPState *rt = s->priv_data; |
a9e534d5 | 1670 | RTSPMessageHeader reply1, *reply = &reply1; |
b7b8fc34 FB |
1671 | char cmd[1024]; |
1672 | ||
b7b8fc34 | 1673 | rt = s->priv_data; |
115329f1 | 1674 | |
ff762d6e FB |
1675 | if (rt->state != RTSP_STATE_PLAYING) |
1676 | return 0; | |
2e889ae4 | 1677 | else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) { |
99b2ac07 RB |
1678 | snprintf(cmd, sizeof(cmd), |
1679 | "PAUSE %s RTSP/1.0\r\n", | |
00eb13e0 | 1680 | rt->control_uri); |
99b2ac07 RB |
1681 | rtsp_send_cmd(s, cmd, reply, NULL); |
1682 | if (reply->status_code != RTSP_STATUS_OK) { | |
1683 | return -1; | |
1684 | } | |
1256d16b | 1685 | } |
5f86057f RB |
1686 | rt->state = RTSP_STATE_PAUSED; |
1687 | return 0; | |
b7b8fc34 FB |
1688 | } |
1689 | ||
115329f1 | 1690 | static int rtsp_read_seek(AVFormatContext *s, int stream_index, |
7b3c1382 | 1691 | int64_t timestamp, int flags) |
ff762d6e FB |
1692 | { |
1693 | RTSPState *rt = s->priv_data; | |
115329f1 | 1694 | |
c8965800 RB |
1695 | rt->seek_timestamp = av_rescale_q(timestamp, |
1696 | s->streams[stream_index]->time_base, | |
1697 | AV_TIME_BASE_Q); | |
ff762d6e FB |
1698 | switch(rt->state) { |
1699 | default: | |
1700 | case RTSP_STATE_IDLE: | |
1701 | break; | |
1702 | case RTSP_STATE_PLAYING: | |
ec606b36 LB |
1703 | if (rtsp_read_pause(s) != 0) |
1704 | return -1; | |
1705 | rt->state = RTSP_STATE_SEEKING; | |
ff762d6e FB |
1706 | if (rtsp_read_play(s) != 0) |
1707 | return -1; | |
1708 | break; | |
1709 | case RTSP_STATE_PAUSED: | |
1710 | rt->state = RTSP_STATE_IDLE; | |
1711 | break; | |
1712 | } | |
1713 | return 0; | |
1714 | } | |
1715 | ||
1617ad97 FB |
1716 | static int rtsp_read_close(AVFormatContext *s) |
1717 | { | |
1718 | RTSPState *rt = s->priv_data; | |
1617ad97 FB |
1719 | char cmd[1024]; |
1720 | ||
b6892136 | 1721 | #if 0 |
1617ad97 | 1722 | /* NOTE: it is valid to flush the buffer here */ |
90abbdba | 1723 | if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) { |
1617ad97 FB |
1724 | url_fclose(&rt->rtsp_gb); |
1725 | } | |
b6892136 | 1726 | #endif |
115329f1 | 1727 | snprintf(cmd, sizeof(cmd), |
b6892136 | 1728 | "TEARDOWN %s RTSP/1.0\r\n", |
1617ad97 | 1729 | s->filename); |
2e13ecfe | 1730 | rtsp_send_cmd_async(s, cmd); |
1617ad97 | 1731 | |
8b1ab7bf | 1732 | rtsp_close_streams(rt); |
1617ad97 FB |
1733 | url_close(rt->rtsp_hd); |
1734 | return 0; | |
1735 | } | |
1736 | ||
d2a067d1 | 1737 | AVInputFormat rtsp_demuxer = { |
1617ad97 | 1738 | "rtsp", |
bde15e74 | 1739 | NULL_IF_CONFIG_SMALL("RTSP input format"), |
1617ad97 FB |
1740 | sizeof(RTSPState), |
1741 | rtsp_probe, | |
1742 | rtsp_read_header, | |
1743 | rtsp_read_packet, | |
1744 | rtsp_read_close, | |
ff762d6e | 1745 | rtsp_read_seek, |
bb76a117 | 1746 | .flags = AVFMT_NOFILE, |
ff762d6e FB |
1747 | .read_play = rtsp_read_play, |
1748 | .read_pause = rtsp_read_pause, | |
1617ad97 | 1749 | }; |
96862926 | 1750 | #endif |
1617ad97 | 1751 | |
cb1fdc61 | 1752 | static int sdp_probe(AVProbeData *p1) |
93ced3e8 | 1753 | { |
0e1ceacd | 1754 | const char *p = p1->buf, *p_end = p1->buf + p1->buf_size; |
cb1fdc61 FB |
1755 | |
1756 | /* we look for a line beginning "c=IN IP4" */ | |
0e1ceacd | 1757 | while (p < p_end && *p != '\0') { |
c8965800 RB |
1758 | if (p + sizeof("c=IN IP4") - 1 < p_end && |
1759 | av_strstart(p, "c=IN IP4", NULL)) | |
cb1fdc61 | 1760 | return AVPROBE_SCORE_MAX / 2; |
0e1ceacd | 1761 | |
c8965800 | 1762 | while (p < p_end - 1 && *p != '\n') p++; |
0e1ceacd | 1763 | if (++p >= p_end) |
cb1fdc61 | 1764 | break; |
cb1fdc61 FB |
1765 | if (*p == '\r') |
1766 | p++; | |
1767 | } | |
93ced3e8 FB |
1768 | return 0; |
1769 | } | |
1770 | ||
1771 | #define SDP_MAX_SIZE 8192 | |
1772 | ||
c8965800 | 1773 | static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap) |
93ced3e8 | 1774 | { |
8b1ab7bf | 1775 | RTSPState *rt = s->priv_data; |
93ced3e8 FB |
1776 | RTSPStream *rtsp_st; |
1777 | int size, i, err; | |
1778 | char *content; | |
1779 | char url[1024]; | |
1780 | ||
1781 | /* read the whole sdp file */ | |
1782 | /* XXX: better loading */ | |
1783 | content = av_malloc(SDP_MAX_SIZE); | |
899681cd | 1784 | size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1); |
93ced3e8 FB |
1785 | if (size <= 0) { |
1786 | av_free(content); | |
1787 | return AVERROR_INVALIDDATA; | |
1788 | } | |
1789 | content[size] ='\0'; | |
1790 | ||
1791 | sdp_parse(s, content); | |
1792 | av_free(content); | |
1793 | ||
1794 | /* open each RTP stream */ | |
c8965800 | 1795 | for (i = 0; i < rt->nb_rtsp_streams; i++) { |
8b1ab7bf | 1796 | rtsp_st = rt->rtsp_streams[i]; |
115329f1 | 1797 | |
d2bf42be | 1798 | snprintf(url, sizeof(url), "rtp://%s:%d?localport=%d&ttl=%d", |
115329f1 | 1799 | inet_ntoa(rtsp_st->sdp_ip), |
93ced3e8 | 1800 | rtsp_st->sdp_port, |
d2bf42be | 1801 | rtsp_st->sdp_port, |
93ced3e8 | 1802 | rtsp_st->sdp_ttl); |
dbf30963 | 1803 | if (url_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) { |
93ced3e8 FB |
1804 | err = AVERROR_INVALIDDATA; |
1805 | goto fail; | |
1806 | } | |
ee0cb67f | 1807 | if ((err = rtsp_open_transport_ctx(s, rtsp_st))) |
8b1ab7bf | 1808 | goto fail; |
93ced3e8 FB |
1809 | } |
1810 | return 0; | |
c8965800 | 1811 | fail: |
8b1ab7bf | 1812 | rtsp_close_streams(rt); |
93ced3e8 FB |
1813 | return err; |
1814 | } | |
1815 | ||
93ced3e8 FB |
1816 | static int sdp_read_close(AVFormatContext *s) |
1817 | { | |
8b1ab7bf FB |
1818 | RTSPState *rt = s->priv_data; |
1819 | rtsp_close_streams(rt); | |
93ced3e8 FB |
1820 | return 0; |
1821 | } | |
1822 | ||
ff70e601 | 1823 | AVInputFormat sdp_demuxer = { |
93ced3e8 | 1824 | "sdp", |
bde15e74 | 1825 | NULL_IF_CONFIG_SMALL("SDP"), |
93ced3e8 FB |
1826 | sizeof(RTSPState), |
1827 | sdp_probe, | |
1828 | sdp_read_header, | |
d7250724 | 1829 | rtsp_fetch_packet, |
93ced3e8 FB |
1830 | sdp_read_close, |
1831 | }; |