3 * Copyright (c) 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
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.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 /* needed by inet_aton() */
25 #include "libavutil/base64.h"
26 #include "libavutil/avstring.h"
27 #include "libavutil/intreadwrite.h"
32 #include <sys/select.h>
41 #include "rtp_vorbis.h"
44 //#define DEBUG_RTP_TCP
46 #if CONFIG_RTSP_DEMUXER
47 static int tcp_read_packet(AVFormatContext
*s
, RTSPStream
**prtsp_st
,
48 uint8_t *buf
, int buf_size
);
49 static int rtsp_read_reply(AVFormatContext
*s
, RTSPMessageHeader
*reply
,
50 unsigned char **content_ptr
,
51 int return_on_interleaved_data
);
54 #if LIBAVFORMAT_VERSION_INT < (53 << 16)
55 int rtsp_default_protocols
= (1 << RTSP_LOWER_TRANSPORT_UDP
);
58 #define SPACE_CHARS " \t\r\n"
59 /* we use memchr() instead of strchr() here because strchr() will return
60 * the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */
61 #define redir_isspace(c) memchr(SPACE_CHARS, c, 4)
62 static void skip_spaces(const char **pp
)
66 while (redir_isspace(*p
))
71 static void get_word_until_chars(char *buf
, int buf_size
,
72 const char *sep
, const char **pp
)
80 while (!strchr(sep
, *p
) && *p
!= '\0') {
81 if ((q
- buf
) < buf_size
- 1)
90 static void get_word_sep(char *buf
, int buf_size
, const char *sep
,
93 if (**pp
== '/') (*pp
)++;
94 get_word_until_chars(buf
, buf_size
, sep
, pp
);
97 static void get_word(char *buf
, int buf_size
, const char **pp
)
99 get_word_until_chars(buf
, buf_size
, SPACE_CHARS
, pp
);
102 /* parse the rtpmap description: <codec_name>/<clock_rate>[/<other
104 static int sdp_parse_rtpmap(AVCodecContext
*codec
, RTSPStream
*rtsp_st
, int payload_type
, const char *p
)
111 /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
112 see if we can handle this kind of payload */
113 get_word_sep(buf
, sizeof(buf
), "/", &p
);
114 if (payload_type
>= RTP_PT_PRIVATE
) {
115 RTPDynamicProtocolHandler
*handler
= RTPFirstDynamicPayloadHandler
;
117 if (!strcasecmp(buf
, handler
->enc_name
) && (codec
->codec_type
== handler
->codec_type
)) {
118 codec
->codec_id
= handler
->codec_id
;
119 rtsp_st
->dynamic_handler
= handler
;
121 rtsp_st
->dynamic_protocol_context
= handler
->open();
125 handler
= handler
->next
;
128 /* We are in a standard case ( from http://www.iana.org/assignments/rtp-parameters) */
129 /* search into AVRtpPayloadTypes[] */
130 codec
->codec_id
= ff_rtp_codec_id(buf
, codec
->codec_type
);
133 c
= avcodec_find_decoder(codec
->codec_id
);
137 c_name
= (char *)NULL
;
140 get_word_sep(buf
, sizeof(buf
), "/", &p
);
142 switch (codec
->codec_type
) {
143 case CODEC_TYPE_AUDIO
:
144 av_log(codec
, 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
;
148 codec
->sample_rate
= i
;
149 get_word_sep(buf
, sizeof(buf
), "/", &p
);
153 // TODO: there is a bug here; if it is a mono stream, and less than 22000Hz, faad upconverts to stereo and twice the
154 // frequency. No problem, but the sample rate is being set here by the sdp line. Upcoming patch forthcoming. (rdm)
156 av_log(codec
, AV_LOG_DEBUG
, " audio samplerate set to : %i\n", codec
->sample_rate
);
157 av_log(codec
, AV_LOG_DEBUG
, " audio channels set to : %i\n", codec
->channels
);
159 case CODEC_TYPE_VIDEO
:
160 av_log(codec
, AV_LOG_DEBUG
, " video codec set to : %s\n", c_name
);
171 /* return the length and optionnaly the data */
172 static int hex_to_data(uint8_t *data
, const char *p
)
182 c
= toupper((unsigned char)*p
++);
183 if (c
>= '0' && c
<= '9')
185 else if (c
>= 'A' && c
<= 'F')
200 static void sdp_parse_fmtp_config(AVCodecContext
* codec
, void *ctx
,
201 char *attr
, char *value
)
203 switch (codec
->codec_id
) {
206 if (!strcmp(attr
, "config")) {
207 /* decode the hexa encoded parameter */
208 int len
= hex_to_data(NULL
, value
);
209 if (codec
->extradata
)
210 av_free(codec
->extradata
);
211 codec
->extradata
= av_mallocz(len
+ FF_INPUT_BUFFER_PADDING_SIZE
);
212 if (!codec
->extradata
)
214 codec
->extradata_size
= len
;
215 hex_to_data(codec
->extradata
, value
);
218 case CODEC_ID_VORBIS
:
219 ff_vorbis_parse_fmtp_config(codec
, ctx
, attr
, value
);
233 /* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
234 #define ATTR_NAME_TYPE_INT 0
235 #define ATTR_NAME_TYPE_STR 1
236 static const AttrNameMap attr_names
[]=
238 {"SizeLength", ATTR_NAME_TYPE_INT
, offsetof(RTPPayloadData
, sizelength
)},
239 {"IndexLength", ATTR_NAME_TYPE_INT
, offsetof(RTPPayloadData
, indexlength
)},
240 {"IndexDeltaLength", ATTR_NAME_TYPE_INT
, offsetof(RTPPayloadData
, indexdeltalength
)},
241 {"profile-level-id", ATTR_NAME_TYPE_INT
, offsetof(RTPPayloadData
, profile_level_id
)},
242 {"StreamType", ATTR_NAME_TYPE_INT
, offsetof(RTPPayloadData
, streamtype
)},
243 {"mode", ATTR_NAME_TYPE_STR
, offsetof(RTPPayloadData
, mode
)},
247 /** parse the attribute line from the fmtp a line of an sdp resonse. This is broken out as a function
248 * because it is used in rtp_h264.c, which is forthcoming.
250 int rtsp_next_attr_and_value(const char **p
, char *attr
, int attr_size
, char *value
, int value_size
)
254 get_word_sep(attr
, attr_size
, "=", p
);
257 get_word_sep(value
, value_size
, ";", p
);
265 /* parse a SDP line and save stream attributes */
266 static void sdp_parse_fmtp(AVStream
*st
, const char *p
)
269 /* Vorbis setup headers can be up to 12KB and are sent base64
270 * encoded, giving a 12KB * (4/3) = 16KB FMTP line. */
274 RTSPStream
*rtsp_st
= st
->priv_data
;
275 AVCodecContext
*codec
= st
->codec
;
276 RTPPayloadData
*rtp_payload_data
= &rtsp_st
->rtp_payload_data
;
278 /* loop on each attribute */
279 while(rtsp_next_attr_and_value(&p
, attr
, sizeof(attr
), value
, sizeof(value
)))
281 /* grab the codec extra_data from the config parameter of the fmtp line */
282 sdp_parse_fmtp_config(codec
, rtsp_st
->dynamic_protocol_context
,
284 /* Looking for a known attribute */
285 for (i
= 0; attr_names
[i
].str
; ++i
) {
286 if (!strcasecmp(attr
, attr_names
[i
].str
)) {
287 if (attr_names
[i
].type
== ATTR_NAME_TYPE_INT
)
288 *(int *)((char *)rtp_payload_data
+ attr_names
[i
].offset
) = atoi(value
);
289 else if (attr_names
[i
].type
== ATTR_NAME_TYPE_STR
)
290 *(char **)((char *)rtp_payload_data
+ attr_names
[i
].offset
) = av_strdup(value
);
296 /** Parse a string \p in the form of Range:npt=xx-xx, and determine the start
298 * Used for seeking in the rtp stream.
300 static void rtsp_parse_range_npt(const char *p
, int64_t *start
, int64_t *end
)
305 if (!av_stristart(p
, "npt=", &p
))
308 *start
= AV_NOPTS_VALUE
;
309 *end
= AV_NOPTS_VALUE
;
311 get_word_sep(buf
, sizeof(buf
), "-", &p
);
312 *start
= parse_date(buf
, 1);
315 get_word_sep(buf
, sizeof(buf
), "-", &p
);
316 *end
= parse_date(buf
, 1);
318 // av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
319 // av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
322 typedef struct SDPParseState
{
324 struct in_addr default_ip
;
326 int skip_media
; ///< set if an unknown m= line occurs
329 static void sdp_parse_line(AVFormatContext
*s
, SDPParseState
*s1
,
330 int letter
, const char *buf
)
332 RTSPState
*rt
= s
->priv_data
;
333 char buf1
[64], st_type
[64];
335 enum CodecType codec_type
;
339 struct in_addr sdp_ip
;
342 dprintf(s
, "sdp: %c='%s'\n", letter
, buf
);
345 if (s1
->skip_media
&& letter
!= 'm')
349 get_word(buf1
, sizeof(buf1
), &p
);
350 if (strcmp(buf1
, "IN") != 0)
352 get_word(buf1
, sizeof(buf1
), &p
);
353 if (strcmp(buf1
, "IP4") != 0)
355 get_word_sep(buf1
, sizeof(buf1
), "/", &p
);
356 if (inet_aton(buf1
, &sdp_ip
) == 0)
361 get_word_sep(buf1
, sizeof(buf1
), "/", &p
);
364 if (s
->nb_streams
== 0) {
365 s1
->default_ip
= sdp_ip
;
366 s1
->default_ttl
= ttl
;
368 st
= s
->streams
[s
->nb_streams
- 1];
369 rtsp_st
= st
->priv_data
;
370 rtsp_st
->sdp_ip
= sdp_ip
;
371 rtsp_st
->sdp_ttl
= ttl
;
375 av_metadata_set(&s
->metadata
, "title", p
);
378 if (s
->nb_streams
== 0) {
379 av_metadata_set(&s
->metadata
, "comment", p
);
386 get_word(st_type
, sizeof(st_type
), &p
);
387 if (!strcmp(st_type
, "audio")) {
388 codec_type
= CODEC_TYPE_AUDIO
;
389 } else if (!strcmp(st_type
, "video")) {
390 codec_type
= CODEC_TYPE_VIDEO
;
391 } else if (!strcmp(st_type
, "application")) {
392 codec_type
= CODEC_TYPE_DATA
;
397 rtsp_st
= av_mallocz(sizeof(RTSPStream
));
400 rtsp_st
->stream_index
= -1;
401 dynarray_add(&rt
->rtsp_streams
, &rt
->nb_rtsp_streams
, rtsp_st
);
403 rtsp_st
->sdp_ip
= s1
->default_ip
;
404 rtsp_st
->sdp_ttl
= s1
->default_ttl
;
406 get_word(buf1
, sizeof(buf1
), &p
); /* port */
407 rtsp_st
->sdp_port
= atoi(buf1
);
409 get_word(buf1
, sizeof(buf1
), &p
); /* protocol (ignored) */
411 /* XXX: handle list of formats */
412 get_word(buf1
, sizeof(buf1
), &p
); /* format list */
413 rtsp_st
->sdp_payload_type
= atoi(buf1
);
415 if (!strcmp(ff_rtp_enc_name(rtsp_st
->sdp_payload_type
), "MP2T")) {
416 /* no corresponding stream */
418 st
= av_new_stream(s
, 0);
421 st
->priv_data
= rtsp_st
;
422 rtsp_st
->stream_index
= st
->index
;
423 st
->codec
->codec_type
= codec_type
;
424 if (rtsp_st
->sdp_payload_type
< RTP_PT_PRIVATE
) {
425 /* if standard payload type, we can find the codec right now */
426 ff_rtp_get_codec_info(st
->codec
, rtsp_st
->sdp_payload_type
);
429 /* put a default control url */
430 av_strlcpy(rtsp_st
->control_url
, s
->filename
, sizeof(rtsp_st
->control_url
));
433 if (av_strstart(p
, "control:", &p
) && s
->nb_streams
> 0) {
435 /* get the control url */
436 st
= s
->streams
[s
->nb_streams
- 1];
437 rtsp_st
= st
->priv_data
;
439 /* XXX: may need to add full url resolution */
440 url_split(proto
, sizeof(proto
), NULL
, 0, NULL
, 0, NULL
, NULL
, 0, p
);
441 if (proto
[0] == '\0') {
442 /* relative control URL */
443 av_strlcat(rtsp_st
->control_url
, "/", sizeof(rtsp_st
->control_url
));
444 av_strlcat(rtsp_st
->control_url
, p
, sizeof(rtsp_st
->control_url
));
446 av_strlcpy(rtsp_st
->control_url
, p
, sizeof(rtsp_st
->control_url
));
448 } else if (av_strstart(p
, "rtpmap:", &p
) && s
->nb_streams
> 0) {
449 /* NOTE: rtpmap is only supported AFTER the 'm=' tag */
450 get_word(buf1
, sizeof(buf1
), &p
);
451 payload_type
= atoi(buf1
);
452 st
= s
->streams
[s
->nb_streams
- 1];
453 rtsp_st
= st
->priv_data
;
454 sdp_parse_rtpmap(st
->codec
, rtsp_st
, payload_type
, p
);
455 } else if (av_strstart(p
, "fmtp:", &p
)) {
456 /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
457 get_word(buf1
, sizeof(buf1
), &p
);
458 payload_type
= atoi(buf1
);
459 for(i
= 0; i
< s
->nb_streams
;i
++) {
461 rtsp_st
= st
->priv_data
;
462 if (rtsp_st
->sdp_payload_type
== payload_type
) {
463 if(rtsp_st
->dynamic_handler
&& rtsp_st
->dynamic_handler
->parse_sdp_a_line
) {
464 if(!rtsp_st
->dynamic_handler
->parse_sdp_a_line(s
, i
, rtsp_st
->dynamic_protocol_context
, buf
)) {
465 sdp_parse_fmtp(st
, p
);
468 sdp_parse_fmtp(st
, p
);
472 } else if(av_strstart(p
, "framesize:", &p
)) {
473 // let dynamic protocol handlers have a stab at the line.
474 get_word(buf1
, sizeof(buf1
), &p
);
475 payload_type
= atoi(buf1
);
476 for(i
= 0; i
< s
->nb_streams
;i
++) {
478 rtsp_st
= st
->priv_data
;
479 if (rtsp_st
->sdp_payload_type
== payload_type
) {
480 if(rtsp_st
->dynamic_handler
&& rtsp_st
->dynamic_handler
->parse_sdp_a_line
) {
481 rtsp_st
->dynamic_handler
->parse_sdp_a_line(s
, i
, rtsp_st
->dynamic_protocol_context
, buf
);
485 } else if(av_strstart(p
, "range:", &p
)) {
488 // this is so that seeking on a streamed file can work.
489 rtsp_parse_range_npt(p
, &start
, &end
);
490 s
->start_time
= start
;
491 s
->duration
= (end
==AV_NOPTS_VALUE
)?AV_NOPTS_VALUE
:end
-start
; // AV_NOPTS_VALUE means live broadcast (and can't seek)
492 } else if (av_strstart(p
, "IsRealDataType:integer;",&p
)) {
494 rt
->transport
= RTSP_TRANSPORT_RDT
;
496 if (rt
->server_type
== RTSP_SERVER_WMS
)
497 ff_wms_parse_sdp_a_line(s
, p
);
498 if (s
->nb_streams
> 0) {
499 if (rt
->server_type
== RTSP_SERVER_REAL
)
500 ff_real_parse_sdp_a_line(s
, s
->nb_streams
- 1, p
);
502 rtsp_st
= s
->streams
[s
->nb_streams
- 1]->priv_data
;
503 if (rtsp_st
->dynamic_handler
&&
504 rtsp_st
->dynamic_handler
->parse_sdp_a_line
)
505 rtsp_st
->dynamic_handler
->parse_sdp_a_line(s
, s
->nb_streams
- 1,
506 rtsp_st
->dynamic_protocol_context
, buf
);
513 static int sdp_parse(AVFormatContext
*s
, const char *content
)
517 /* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
518 * contain long SDP lines containing complete ASF Headers (several
519 * kB) or arrays of MDPR (RM stream descriptor) headers plus
520 * "rulebooks" describing their properties. Therefore, the SDP line
523 * The Vorbis FMTP line can be up to 16KB - see sdp_parse_fmtp. */
525 SDPParseState sdp_parse_state
, *s1
= &sdp_parse_state
;
527 memset(s1
, 0, sizeof(SDPParseState
));
538 /* get the content */
540 while (*p
!= '\n' && *p
!= '\r' && *p
!= '\0') {
541 if ((q
- buf
) < sizeof(buf
) - 1)
546 sdp_parse_line(s
, s1
, letter
, buf
);
548 while (*p
!= '\n' && *p
!= '\0')
556 static int udp_read_packet(AVFormatContext
*s
, RTSPStream
**prtsp_st
,
557 uint8_t *buf
, int buf_size
)
559 RTSPState
*rt
= s
->priv_data
;
562 int fd
, fd_max
, n
, i
, ret
, tcp_fd
;
566 if (url_interrupt_cb())
567 return AVERROR(EINTR
);
570 tcp_fd
= fd_max
= url_get_file_handle(rt
->rtsp_hd
);
571 FD_SET(tcp_fd
, &rfds
);
576 for(i
= 0; i
< rt
->nb_rtsp_streams
; i
++) {
577 rtsp_st
= rt
->rtsp_streams
[i
];
578 if (rtsp_st
->rtp_handle
) {
579 /* currently, we cannot probe RTCP handle because of
580 * blocking restrictions */
581 fd
= url_get_file_handle(rtsp_st
->rtp_handle
);
588 tv
.tv_usec
= 100 * 1000;
589 n
= select(fd_max
+ 1, &rfds
, NULL
, NULL
, &tv
);
591 for(i
= 0; i
< rt
->nb_rtsp_streams
; i
++) {
592 rtsp_st
= rt
->rtsp_streams
[i
];
593 if (rtsp_st
->rtp_handle
) {
594 fd
= url_get_file_handle(rtsp_st
->rtp_handle
);
595 if (FD_ISSET(fd
, &rfds
)) {
596 ret
= url_read(rtsp_st
->rtp_handle
, buf
, buf_size
);
604 #if CONFIG_RTSP_DEMUXER
605 if (FD_ISSET(tcp_fd
, &rfds
)) {
606 RTSPMessageHeader reply
;
608 rtsp_read_reply(s
, &reply
, NULL
, 0);
609 /* XXX: parse message */
610 if (rt
->state
!= RTSP_STATE_PLAYING
)
618 static int sdp_read_packet(AVFormatContext
*s
, AVPacket
*pkt
)
620 RTSPState
*rt
= s
->priv_data
;
622 uint8_t buf
[10 * RTP_MAX_PACKET_LENGTH
];
625 /* get next frames from the same RTP packet */
626 if (rt
->cur_transport_priv
) {
627 if (rt
->transport
== RTSP_TRANSPORT_RDT
)
628 ret
= ff_rdt_parse_packet(rt
->cur_transport_priv
, pkt
, NULL
, 0);
630 ret
= rtp_parse_packet(rt
->cur_transport_priv
, pkt
, NULL
, 0);
632 rt
->cur_transport_priv
= NULL
;
634 } else if (ret
== 1) {
637 rt
->cur_transport_priv
= NULL
;
641 /* read next RTP packet */
643 switch(rt
->lower_transport
) {
645 #if CONFIG_RTSP_DEMUXER
646 case RTSP_LOWER_TRANSPORT_TCP
:
647 len
= tcp_read_packet(s
, &rtsp_st
, buf
, sizeof(buf
));
650 case RTSP_LOWER_TRANSPORT_UDP
:
651 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST
:
652 len
= udp_read_packet(s
, &rtsp_st
, buf
, sizeof(buf
));
653 if (len
>=0 && rtsp_st
->transport_priv
&& rt
->transport
== RTSP_TRANSPORT_RTP
)
654 rtp_check_and_send_back_rr(rtsp_st
->transport_priv
, len
);
661 if (rt
->transport
== RTSP_TRANSPORT_RDT
)
662 ret
= ff_rdt_parse_packet(rtsp_st
->transport_priv
, pkt
, buf
, len
);
664 ret
= rtp_parse_packet(rtsp_st
->transport_priv
, pkt
, buf
, len
);
668 /* more packets may follow, so we save the RTP context */
669 rt
->cur_transport_priv
= rtsp_st
->transport_priv
;
675 /* close and free RTSP streams */
676 static void rtsp_close_streams(RTSPState
*rt
)
681 for(i
=0;i
<rt
->nb_rtsp_streams
;i
++) {
682 rtsp_st
= rt
->rtsp_streams
[i
];
684 if (rtsp_st
->transport_priv
) {
685 if (rt
->transport
== RTSP_TRANSPORT_RDT
)
686 ff_rdt_parse_close(rtsp_st
->transport_priv
);
688 rtp_parse_close(rtsp_st
->transport_priv
);
690 if (rtsp_st
->rtp_handle
)
691 url_close(rtsp_st
->rtp_handle
);
692 if (rtsp_st
->dynamic_handler
&& rtsp_st
->dynamic_protocol_context
)
693 rtsp_st
->dynamic_handler
->close(rtsp_st
->dynamic_protocol_context
);
696 av_free(rt
->rtsp_streams
);
698 av_close_input_stream (rt
->asf_ctx
);
701 av_freep(&rt
->auth_b64
);
705 rtsp_open_transport_ctx(AVFormatContext
*s
, RTSPStream
*rtsp_st
)
707 RTSPState
*rt
= s
->priv_data
;
710 /* open the RTP context */
711 if (rtsp_st
->stream_index
>= 0)
712 st
= s
->streams
[rtsp_st
->stream_index
];
714 s
->ctx_flags
|= AVFMTCTX_NOHEADER
;
716 if (rt
->transport
== RTSP_TRANSPORT_RDT
)
717 rtsp_st
->transport_priv
= ff_rdt_parse_open(s
, st
->index
,
718 rtsp_st
->dynamic_protocol_context
,
719 rtsp_st
->dynamic_handler
);
721 rtsp_st
->transport_priv
= rtp_parse_open(s
, st
, rtsp_st
->rtp_handle
,
722 rtsp_st
->sdp_payload_type
,
723 &rtsp_st
->rtp_payload_data
);
725 if (!rtsp_st
->transport_priv
) {
726 return AVERROR(ENOMEM
);
727 } else if (rt
->transport
!= RTSP_TRANSPORT_RDT
) {
728 if(rtsp_st
->dynamic_handler
) {
729 rtp_parse_set_dynamic_protocol(rtsp_st
->transport_priv
,
730 rtsp_st
->dynamic_protocol_context
,
731 rtsp_st
->dynamic_handler
);
738 #if CONFIG_RTSP_DEMUXER
739 static int rtsp_probe(AVProbeData
*p
)
741 if (av_strstart(p
->filename
, "rtsp:", NULL
))
742 return AVPROBE_SCORE_MAX
;
746 static void rtsp_parse_range(int *min_ptr
, int *max_ptr
, const char **pp
)
753 v
= strtol(p
, (char **)&p
, 10);
757 v
= strtol(p
, (char **)&p
, 10);
766 /* XXX: only one transport specification is parsed */
767 static void rtsp_parse_transport(RTSPMessageHeader
*reply
, const char *p
)
769 char transport_protocol
[16];
771 char lower_transport
[16];
773 RTSPTransportField
*th
;
776 reply
->nb_transports
= 0;
783 th
= &reply
->transports
[reply
->nb_transports
];
785 get_word_sep(transport_protocol
, sizeof(transport_protocol
),
787 if (!strcasecmp (transport_protocol
, "rtp")) {
788 get_word_sep(profile
, sizeof(profile
), "/;,", &p
);
789 lower_transport
[0] = '\0';
790 /* rtp/avp/<protocol> */
792 get_word_sep(lower_transport
, sizeof(lower_transport
),
795 th
->transport
= RTSP_TRANSPORT_RTP
;
796 } else if (!strcasecmp (transport_protocol
, "x-pn-tng") ||
797 !strcasecmp (transport_protocol
, "x-real-rdt")) {
798 /* x-pn-tng/<protocol> */
799 get_word_sep(lower_transport
, sizeof(lower_transport
), "/;,", &p
);
801 th
->transport
= RTSP_TRANSPORT_RDT
;
803 if (!strcasecmp(lower_transport
, "TCP"))
804 th
->lower_transport
= RTSP_LOWER_TRANSPORT_TCP
;
806 th
->lower_transport
= RTSP_LOWER_TRANSPORT_UDP
;
810 /* get each parameter */
811 while (*p
!= '\0' && *p
!= ',') {
812 get_word_sep(parameter
, sizeof(parameter
), "=;,", &p
);
813 if (!strcmp(parameter
, "port")) {
816 rtsp_parse_range(&th
->port_min
, &th
->port_max
, &p
);
818 } else if (!strcmp(parameter
, "client_port")) {
821 rtsp_parse_range(&th
->client_port_min
,
822 &th
->client_port_max
, &p
);
824 } else if (!strcmp(parameter
, "server_port")) {
827 rtsp_parse_range(&th
->server_port_min
,
828 &th
->server_port_max
, &p
);
830 } else if (!strcmp(parameter
, "interleaved")) {
833 rtsp_parse_range(&th
->interleaved_min
,
834 &th
->interleaved_max
, &p
);
836 } else if (!strcmp(parameter
, "multicast")) {
837 if (th
->lower_transport
== RTSP_LOWER_TRANSPORT_UDP
)
838 th
->lower_transport
= RTSP_LOWER_TRANSPORT_UDP_MULTICAST
;
839 } else if (!strcmp(parameter
, "ttl")) {
842 th
->ttl
= strtol(p
, (char **)&p
, 10);
844 } else if (!strcmp(parameter
, "destination")) {
845 struct in_addr ipaddr
;
849 get_word_sep(buf
, sizeof(buf
), ";,", &p
);
850 if (inet_aton(buf
, &ipaddr
))
851 th
->destination
= ntohl(ipaddr
.s_addr
);
854 while (*p
!= ';' && *p
!= '\0' && *p
!= ',')
862 reply
->nb_transports
++;
866 void rtsp_parse_line(RTSPMessageHeader
*reply
, const char *buf
)
870 /* NOTE: we do case independent match for broken servers */
872 if (av_stristart(p
, "Session:", &p
)) {
874 get_word_sep(reply
->session_id
, sizeof(reply
->session_id
), ";", &p
);
875 if (av_stristart(p
, ";timeout=", &p
) &&
876 (t
= strtol(p
, NULL
, 10)) > 0) {
879 } else if (av_stristart(p
, "Content-Length:", &p
)) {
880 reply
->content_length
= strtol(p
, NULL
, 10);
881 } else if (av_stristart(p
, "Transport:", &p
)) {
882 rtsp_parse_transport(reply
, p
);
883 } else if (av_stristart(p
, "CSeq:", &p
)) {
884 reply
->seq
= strtol(p
, NULL
, 10);
885 } else if (av_stristart(p
, "Range:", &p
)) {
886 rtsp_parse_range_npt(p
, &reply
->range_start
, &reply
->range_end
);
887 } else if (av_stristart(p
, "RealChallenge1:", &p
)) {
889 av_strlcpy(reply
->real_challenge
, p
, sizeof(reply
->real_challenge
));
890 } else if (av_stristart(p
, "Server:", &p
)) {
892 av_strlcpy(reply
->server
, p
, sizeof(reply
->server
));
893 } else if (av_stristart(p
, "Notice:", &p
) ||
894 av_stristart(p
, "X-Notice:", &p
)) {
895 reply
->notice
= strtol(p
, NULL
, 10);
896 } else if (av_stristart(p
, "Location:", &p
)) {
898 av_strlcpy(reply
->location
, p
, sizeof(reply
->location
));
902 /* skip a RTP/TCP interleaved packet */
903 static void rtsp_skip_packet(AVFormatContext
*s
)
905 RTSPState
*rt
= s
->priv_data
;
909 ret
= url_read_complete(rt
->rtsp_hd
, buf
, 3);
912 len
= AV_RB16(buf
+ 1);
914 dprintf(s
, "skipping RTP packet len=%d\n", len
);
919 if (len1
> sizeof(buf
))
921 ret
= url_read_complete(rt
->rtsp_hd
, buf
, len1
);
929 * Read a RTSP message from the server, or prepare to read data
930 * packets if we're reading data interleaved over the TCP/RTSP
931 * connection as well.
933 * @param s RTSP demuxer context
934 * @param reply pointer where the RTSP message header will be stored
935 * @param content_ptr pointer where the RTSP message body, if any, will
936 * be stored (length is in \p reply)
937 * @param return_on_interleaved_data whether the function may return if we
938 * encounter a data marker ('$'), which precedes data
939 * packets over interleaved TCP/RTSP connections. If this
940 * is set, this function will return 1 after encountering
941 * a '$'. If it is not set, the function will skip any
942 * data packets (if they are encountered), until a reply
943 * has been fully parsed. If no more data is available
944 * without parsing a reply, it will return an error.
946 * @returns 1 if a data packets is ready to be received, -1 on error,
950 rtsp_read_reply (AVFormatContext
*s
, RTSPMessageHeader
*reply
,
951 unsigned char **content_ptr
, int return_on_interleaved_data
)
953 RTSPState
*rt
= s
->priv_data
;
954 char buf
[4096], buf1
[1024], *q
;
957 int ret
, content_length
, line_count
= 0;
958 unsigned char *content
= NULL
;
960 memset(reply
, 0, sizeof(*reply
));
962 /* parse reply (XXX: use buffers) */
963 rt
->last_reply
[0] = '\0';
967 ret
= url_read_complete(rt
->rtsp_hd
, &ch
, 1);
969 dprintf(s
, "ret=%d c=%02x [%c]\n", ret
, ch
, ch
);
976 /* XXX: only parse it if first char on line ? */
977 if (return_on_interleaved_data
) {
981 } else if (ch
!= '\r') {
982 if ((q
- buf
) < sizeof(buf
) - 1)
988 dprintf(s
, "line='%s'\n", buf
);
990 /* test if last line */
994 if (line_count
== 0) {
996 get_word(buf1
, sizeof(buf1
), &p
);
997 get_word(buf1
, sizeof(buf1
), &p
);
998 reply
->status_code
= atoi(buf1
);
1000 rtsp_parse_line(reply
, p
);
1001 av_strlcat(rt
->last_reply
, p
, sizeof(rt
->last_reply
));
1002 av_strlcat(rt
->last_reply
, "\n", sizeof(rt
->last_reply
));
1007 if (rt
->session_id
[0] == '\0' && reply
->session_id
[0] != '\0')
1008 av_strlcpy(rt
->session_id
, reply
->session_id
, sizeof(rt
->session_id
));
1010 content_length
= reply
->content_length
;
1011 if (content_length
> 0) {
1012 /* leave some room for a trailing '\0' (useful for simple parsing) */
1013 content
= av_malloc(content_length
+ 1);
1014 (void)url_read_complete(rt
->rtsp_hd
, content
, content_length
);
1015 content
[content_length
] = '\0';
1018 *content_ptr
= content
;
1023 if (reply
->notice
== 2101 /* End-of-Stream Reached */ ||
1024 reply
->notice
== 2104 /* Start-of-Stream Reached */ ||
1025 reply
->notice
== 2306 /* Continuous Feed Terminated */)
1026 rt
->state
= RTSP_STATE_IDLE
;
1027 else if (reply
->notice
>= 4400 && reply
->notice
< 5500)
1028 return AVERROR(EIO
); /* data or server error */
1029 else if (reply
->notice
== 2401 /* Ticket Expired */ ||
1030 (reply
->notice
>= 5500 && reply
->notice
< 5600) /* end of term */ )
1031 return AVERROR(EPERM
);
1036 static void rtsp_send_cmd_async (AVFormatContext
*s
,
1037 const char *cmd
, RTSPMessageHeader
*reply
,
1038 unsigned char **content_ptr
)
1040 RTSPState
*rt
= s
->priv_data
;
1041 char buf
[4096], buf1
[1024];
1044 av_strlcpy(buf
, cmd
, sizeof(buf
));
1045 snprintf(buf1
, sizeof(buf1
), "CSeq: %d\r\n", rt
->seq
);
1046 av_strlcat(buf
, buf1
, sizeof(buf
));
1047 if (rt
->session_id
[0] != '\0' && !strstr(cmd
, "\nIf-Match:")) {
1048 snprintf(buf1
, sizeof(buf1
), "Session: %s\r\n", rt
->session_id
);
1049 av_strlcat(buf
, buf1
, sizeof(buf
));
1052 av_strlcatf(buf
, sizeof(buf
),
1053 "Authorization: Basic %s\r\n",
1055 av_strlcat(buf
, "\r\n", sizeof(buf
));
1057 dprintf(s
, "Sending:\n%s--\n", buf
);
1059 url_write(rt
->rtsp_hd
, buf
, strlen(buf
));
1060 rt
->last_cmd_time
= av_gettime();
1063 static void rtsp_send_cmd (AVFormatContext
*s
,
1064 const char *cmd
, RTSPMessageHeader
*reply
,
1065 unsigned char **content_ptr
)
1067 rtsp_send_cmd_async(s
, cmd
, reply
, content_ptr
);
1069 rtsp_read_reply(s
, reply
, content_ptr
, 0);
1073 * @returns 0 on success, <0 on error, 1 if protocol is unavailable.
1076 make_setup_request (AVFormatContext
*s
, const char *host
, int port
,
1077 int lower_transport
, const char *real_challenge
)
1079 RTSPState
*rt
= s
->priv_data
;
1080 int rtx
, j
, i
, err
, interleave
= 0;
1081 RTSPStream
*rtsp_st
;
1082 RTSPMessageHeader reply1
, *reply
= &reply1
;
1084 const char *trans_pref
;
1086 if (rt
->transport
== RTSP_TRANSPORT_RDT
)
1087 trans_pref
= "x-pn-tng";
1089 trans_pref
= "RTP/AVP";
1091 /* default timeout: 1 minute */
1094 /* for each stream, make the setup request */
1095 /* XXX: we assume the same server is used for the control of each
1098 for(j
= RTSP_RTP_PORT_MIN
, i
= 0; i
< rt
->nb_rtsp_streams
; ++i
) {
1099 char transport
[2048];
1102 * WMS serves all UDP data over a single connection, the RTX, which
1103 * isn't necessarily the first in the SDP but has to be the first
1104 * to be set up, else the second/third SETUP will fail with a 461.
1106 if (lower_transport
== RTSP_LOWER_TRANSPORT_UDP
&&
1107 rt
->server_type
== RTSP_SERVER_WMS
) {
1110 for (rtx
= 0; rtx
< rt
->nb_rtsp_streams
; rtx
++) {
1111 int len
= strlen(rt
->rtsp_streams
[rtx
]->control_url
);
1113 !strcmp(rt
->rtsp_streams
[rtx
]->control_url
+ len
- 4, "/rtx"))
1116 if (rtx
== rt
->nb_rtsp_streams
)
1117 return -1; /* no RTX found */
1118 rtsp_st
= rt
->rtsp_streams
[rtx
];
1120 rtsp_st
= rt
->rtsp_streams
[i
> rtx
? i
: i
- 1];
1122 rtsp_st
= rt
->rtsp_streams
[i
];
1125 if (lower_transport
== RTSP_LOWER_TRANSPORT_UDP
) {
1128 if (rt
->server_type
== RTSP_SERVER_WMS
&& i
> 1) {
1129 port
= reply
->transports
[0].client_port_min
;
1133 /* first try in specified port range */
1134 if (RTSP_RTP_PORT_MIN
!= 0) {
1135 while(j
<= RTSP_RTP_PORT_MAX
) {
1136 snprintf(buf
, sizeof(buf
), "rtp://%s?localport=%d", host
, j
);
1137 j
+= 2; /* we will use two port by rtp stream (rtp and rtcp) */
1138 if (url_open(&rtsp_st
->rtp_handle
, buf
, URL_RDWR
) == 0) {
1144 /* then try on any port
1145 ** if (url_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
1146 ** err = AVERROR_INVALIDDATA;
1152 port
= rtp_get_local_port(rtsp_st
->rtp_handle
);
1154 snprintf(transport
, sizeof(transport
) - 1,
1155 "%s/UDP;", trans_pref
);
1156 if (rt
->server_type
!= RTSP_SERVER_REAL
)
1157 av_strlcat(transport
, "unicast;", sizeof(transport
));
1158 av_strlcatf(transport
, sizeof(transport
),
1159 "client_port=%d", port
);
1160 if (rt
->transport
== RTSP_TRANSPORT_RTP
&&
1161 !(rt
->server_type
== RTSP_SERVER_WMS
&& i
> 0))
1162 av_strlcatf(transport
, sizeof(transport
), "-%d", port
+ 1);
1166 else if (lower_transport
== RTSP_LOWER_TRANSPORT_TCP
) {
1167 /** For WMS streams, the application streams are only used for
1168 * UDP. When trying to set it up for TCP streams, the server
1169 * will return an error. Therefore, we skip those streams. */
1170 if (rt
->server_type
== RTSP_SERVER_WMS
&&
1171 s
->streams
[rtsp_st
->stream_index
]->codec
->codec_type
== CODEC_TYPE_DATA
)
1173 snprintf(transport
, sizeof(transport
) - 1,
1174 "%s/TCP;", trans_pref
);
1175 if (rt
->server_type
== RTSP_SERVER_WMS
)
1176 av_strlcat(transport
, "unicast;", sizeof(transport
));
1177 av_strlcatf(transport
, sizeof(transport
),
1178 "interleaved=%d-%d",
1179 interleave
, interleave
+ 1);
1183 else if (lower_transport
== RTSP_LOWER_TRANSPORT_UDP_MULTICAST
) {
1184 snprintf(transport
, sizeof(transport
) - 1,
1185 "%s/UDP;multicast", trans_pref
);
1187 if (rt
->server_type
== RTSP_SERVER_REAL
||
1188 rt
->server_type
== RTSP_SERVER_WMS
)
1189 av_strlcat(transport
, ";mode=play", sizeof(transport
));
1190 snprintf(cmd
, sizeof(cmd
),
1191 "SETUP %s RTSP/1.0\r\n"
1192 "Transport: %s\r\n",
1193 rtsp_st
->control_url
, transport
);
1194 if (i
== 0 && rt
->server_type
== RTSP_SERVER_REAL
) {
1195 char real_res
[41], real_csum
[9];
1196 ff_rdt_calc_response_and_checksum(real_res
, real_csum
,
1198 av_strlcatf(cmd
, sizeof(cmd
),
1200 "RealChallenge2: %s, sd=%s\r\n",
1201 rt
->session_id
, real_res
, real_csum
);
1203 rtsp_send_cmd(s
, cmd
, reply
, NULL
);
1204 if (reply
->status_code
== 461 /* Unsupported protocol */ && i
== 0) {
1207 } else if (reply
->status_code
!= RTSP_STATUS_OK
||
1208 reply
->nb_transports
!= 1) {
1209 err
= AVERROR_INVALIDDATA
;
1213 /* XXX: same protocol for all streams is required */
1215 if (reply
->transports
[0].lower_transport
!= rt
->lower_transport
||
1216 reply
->transports
[0].transport
!= rt
->transport
) {
1217 err
= AVERROR_INVALIDDATA
;
1221 rt
->lower_transport
= reply
->transports
[0].lower_transport
;
1222 rt
->transport
= reply
->transports
[0].transport
;
1225 /* close RTP connection if not choosen */
1226 if (reply
->transports
[0].lower_transport
!= RTSP_LOWER_TRANSPORT_UDP
&&
1227 (lower_transport
== RTSP_LOWER_TRANSPORT_UDP
)) {
1228 url_close(rtsp_st
->rtp_handle
);
1229 rtsp_st
->rtp_handle
= NULL
;
1232 switch(reply
->transports
[0].lower_transport
) {
1233 case RTSP_LOWER_TRANSPORT_TCP
:
1234 rtsp_st
->interleaved_min
= reply
->transports
[0].interleaved_min
;
1235 rtsp_st
->interleaved_max
= reply
->transports
[0].interleaved_max
;
1238 case RTSP_LOWER_TRANSPORT_UDP
:
1242 /* XXX: also use address if specified */
1243 snprintf(url
, sizeof(url
), "rtp://%s:%d",
1244 host
, reply
->transports
[0].server_port_min
);
1245 if (!(rt
->server_type
== RTSP_SERVER_WMS
&& i
> 1) &&
1246 rtp_set_remote_url(rtsp_st
->rtp_handle
, url
) < 0) {
1247 err
= AVERROR_INVALIDDATA
;
1252 case RTSP_LOWER_TRANSPORT_UDP_MULTICAST
:
1258 if (reply
->transports
[0].destination
) {
1259 in
.s_addr
= htonl(reply
->transports
[0].destination
);
1260 port
= reply
->transports
[0].port_min
;
1261 ttl
= reply
->transports
[0].ttl
;
1263 in
= rtsp_st
->sdp_ip
;
1264 port
= rtsp_st
->sdp_port
;
1265 ttl
= rtsp_st
->sdp_ttl
;
1267 snprintf(url
, sizeof(url
), "rtp://%s:%d?ttl=%d",
1268 inet_ntoa(in
), port
, ttl
);
1269 if (url_open(&rtsp_st
->rtp_handle
, url
, URL_RDWR
) < 0) {
1270 err
= AVERROR_INVALIDDATA
;
1277 if ((err
= rtsp_open_transport_ctx(s
, rtsp_st
)))
1281 if (reply
->timeout
> 0)
1282 rt
->timeout
= reply
->timeout
;
1284 if (rt
->server_type
== RTSP_SERVER_REAL
)
1285 rt
->need_subscription
= 1;
1290 for (i
=0; i
<rt
->nb_rtsp_streams
; i
++) {
1291 if (rt
->rtsp_streams
[i
]->rtp_handle
) {
1292 url_close(rt
->rtsp_streams
[i
]->rtp_handle
);
1293 rt
->rtsp_streams
[i
]->rtp_handle
= NULL
;
1299 static int rtsp_read_play(AVFormatContext
*s
)
1301 RTSPState
*rt
= s
->priv_data
;
1302 RTSPMessageHeader reply1
, *reply
= &reply1
;
1305 av_log(s
, AV_LOG_DEBUG
, "hello state=%d\n", rt
->state
);
1307 if (!(rt
->server_type
== RTSP_SERVER_REAL
&& rt
->need_subscription
)) {
1308 if (rt
->state
== RTSP_STATE_PAUSED
) {
1309 snprintf(cmd
, sizeof(cmd
),
1310 "PLAY %s RTSP/1.0\r\n",
1313 snprintf(cmd
, sizeof(cmd
),
1314 "PLAY %s RTSP/1.0\r\n"
1315 "Range: npt=%0.3f-\r\n",
1317 (double)rt
->seek_timestamp
/ AV_TIME_BASE
);
1319 rtsp_send_cmd(s
, cmd
, reply
, NULL
);
1320 if (reply
->status_code
!= RTSP_STATUS_OK
) {
1324 rt
->state
= RTSP_STATE_PLAYING
;
1328 static int rtsp_read_header(AVFormatContext
*s
,
1329 AVFormatParameters
*ap
)
1331 RTSPState
*rt
= s
->priv_data
;
1332 char host
[1024], path
[1024], tcpname
[1024], cmd
[2048], auth
[128];
1333 char *option_list
, *option
, *filename
;
1334 URLContext
*rtsp_hd
;
1336 RTSPMessageHeader reply1
, *reply
= &reply1
;
1337 unsigned char *content
= NULL
;
1338 int lower_transport_mask
= 0;
1339 char real_challenge
[64];
1341 /* extract hostname and port */
1342 url_split(NULL
, 0, auth
, sizeof(auth
),
1343 host
, sizeof(host
), &port
, path
, sizeof(path
), s
->filename
);
1345 int auth_len
= strlen(auth
), b64_len
= ((auth_len
+ 2) / 3) * 4 + 1;
1347 if (!(rt
->auth_b64
= av_malloc(b64_len
)))
1348 return AVERROR(ENOMEM
);
1349 if (!av_base64_encode(rt
->auth_b64
, b64_len
, auth
, auth_len
)) {
1350 err
= AVERROR(EINVAL
);
1355 port
= RTSP_DEFAULT_PORT
;
1357 /* search for options */
1358 option_list
= strchr(path
, '?');
1360 filename
= strchr(s
->filename
, '?');
1361 while(option_list
) {
1362 /* move the option pointer */
1363 option
= ++option_list
;
1364 option_list
= strchr(option_list
, '&');
1368 /* handle the options */
1369 if (strcmp(option
, "udp") == 0)
1370 lower_transport_mask
= (1<< RTSP_LOWER_TRANSPORT_UDP
);
1371 else if (strcmp(option
, "multicast") == 0)
1372 lower_transport_mask
= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST
);
1373 else if (strcmp(option
, "tcp") == 0)
1374 lower_transport_mask
= (1<< RTSP_LOWER_TRANSPORT_TCP
);
1376 strcpy(++filename
, option
);
1377 filename
+= strlen(option
);
1378 if (option_list
) *filename
= '&';
1384 if (!lower_transport_mask
)
1385 lower_transport_mask
= (1 << RTSP_LOWER_TRANSPORT_NB
) - 1;
1387 /* open the tcp connexion */
1388 snprintf(tcpname
, sizeof(tcpname
), "tcp://%s:%d", host
, port
);
1389 if (url_open(&rtsp_hd
, tcpname
, URL_RDWR
) < 0) {
1393 rt
->rtsp_hd
= rtsp_hd
;
1396 /* request options supported by the server; this also detects server type */
1397 for (rt
->server_type
= RTSP_SERVER_RTP
;;) {
1398 snprintf(cmd
, sizeof(cmd
),
1399 "OPTIONS %s RTSP/1.0\r\n", s
->filename
);
1400 if (rt
->server_type
== RTSP_SERVER_REAL
)
1403 * The following entries are required for proper
1404 * streaming from a Realmedia server. They are
1405 * interdependent in some way although we currently
1406 * don't quite understand how. Values were copied
1407 * from mplayer SVN r23589.
1408 * @param CompanyID is a 16-byte ID in base64
1409 * @param ClientChallenge is a 16-byte ID in hex
1411 "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
1412 "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
1413 "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
1414 "GUID: 00000000-0000-0000-0000-000000000000\r\n",
1416 rtsp_send_cmd(s
, cmd
, reply
, NULL
);
1417 if (reply
->status_code
!= RTSP_STATUS_OK
) {
1418 err
= AVERROR_INVALIDDATA
;
1422 /* detect server type if not standard-compliant RTP */
1423 if (rt
->server_type
!= RTSP_SERVER_REAL
&& reply
->real_challenge
[0]) {
1424 rt
->server_type
= RTSP_SERVER_REAL
;
1426 } else if (!strncasecmp(reply
->server
, "WMServer/", 9)) {
1427 rt
->server_type
= RTSP_SERVER_WMS
;
1428 } else if (rt
->server_type
== RTSP_SERVER_REAL
) {
1429 strcpy(real_challenge
, reply
->real_challenge
);
1434 /* describe the stream */
1435 snprintf(cmd
, sizeof(cmd
),
1436 "DESCRIBE %s RTSP/1.0\r\n"
1437 "Accept: application/sdp\r\n",
1439 if (rt
->server_type
== RTSP_SERVER_REAL
) {
1441 * The Require: attribute is needed for proper streaming from
1442 * Realmedia servers.
1445 "Require: com.real.retain-entity-for-setup\r\n",
1448 rtsp_send_cmd(s
, cmd
, reply
, &content
);
1450 err
= AVERROR_INVALIDDATA
;
1453 if (reply
->status_code
!= RTSP_STATUS_OK
) {
1454 err
= AVERROR_INVALIDDATA
;
1458 /* now we got the SDP description, we parse it */
1459 ret
= sdp_parse(s
, (const char *)content
);
1462 err
= AVERROR_INVALIDDATA
;
1467 int lower_transport
= ff_log2_tab
[lower_transport_mask
& ~(lower_transport_mask
- 1)];
1469 err
= make_setup_request(s
, host
, port
, lower_transport
,
1470 rt
->server_type
== RTSP_SERVER_REAL
?
1471 real_challenge
: NULL
);
1474 lower_transport_mask
&= ~(1 << lower_transport
);
1475 if (lower_transport_mask
== 0 && err
== 1) {
1476 err
= AVERROR(FF_NETERROR(EPROTONOSUPPORT
));
1481 rt
->state
= RTSP_STATE_IDLE
;
1482 rt
->seek_timestamp
= 0; /* default is to start stream at position
1484 if (ap
->initial_pause
) {
1485 /* do not start immediately */
1487 if (rtsp_read_play(s
) < 0) {
1488 err
= AVERROR_INVALIDDATA
;
1494 rtsp_close_streams(rt
);
1496 url_close(rt
->rtsp_hd
);
1497 if (reply
->status_code
>=300 && reply
->status_code
< 400) {
1498 av_strlcpy(s
->filename
, reply
->location
, sizeof(s
->filename
));
1499 av_log(s
, AV_LOG_INFO
, "Status %d: Redirecting to %s\n",
1507 static int tcp_read_packet(AVFormatContext
*s
, RTSPStream
**prtsp_st
,
1508 uint8_t *buf
, int buf_size
)
1510 RTSPState
*rt
= s
->priv_data
;
1511 int id
, len
, i
, ret
;
1512 RTSPStream
*rtsp_st
;
1514 #ifdef DEBUG_RTP_TCP
1515 dprintf(s
, "tcp_read_packet:\n");
1519 RTSPMessageHeader reply
;
1521 ret
= rtsp_read_reply(s
, &reply
, NULL
, 1);
1524 if (ret
== 1) /* received '$' */
1526 /* XXX: parse message */
1527 if (rt
->state
!= RTSP_STATE_PLAYING
)
1530 ret
= url_read_complete(rt
->rtsp_hd
, buf
, 3);
1534 len
= AV_RB16(buf
+ 1);
1535 #ifdef DEBUG_RTP_TCP
1536 dprintf(s
, "id=%d len=%d\n", id
, len
);
1538 if (len
> buf_size
|| len
< 12)
1541 ret
= url_read_complete(rt
->rtsp_hd
, buf
, len
);
1544 if (rt
->transport
== RTSP_TRANSPORT_RDT
&&
1545 ff_rdt_parse_header(buf
, len
, &id
, NULL
, NULL
, NULL
, NULL
) < 0)
1548 /* find the matching stream */
1549 for(i
= 0; i
< rt
->nb_rtsp_streams
; i
++) {
1550 rtsp_st
= rt
->rtsp_streams
[i
];
1551 if (id
>= rtsp_st
->interleaved_min
&&
1552 id
<= rtsp_st
->interleaved_max
)
1557 *prtsp_st
= rtsp_st
;
1561 static int rtsp_read_packet(AVFormatContext
*s
,
1564 RTSPState
*rt
= s
->priv_data
;
1566 RTSPMessageHeader reply1
, *reply
= &reply1
;
1569 if (rt
->server_type
== RTSP_SERVER_REAL
) {
1571 enum AVDiscard cache
[MAX_STREAMS
];
1573 for (i
= 0; i
< s
->nb_streams
; i
++)
1574 cache
[i
] = s
->streams
[i
]->discard
;
1576 if (!rt
->need_subscription
) {
1577 if (memcmp (cache
, rt
->real_setup_cache
,
1578 sizeof(enum AVDiscard
) * s
->nb_streams
)) {
1579 av_strlcatf(cmd
, sizeof(cmd
),
1580 "SET_PARAMETER %s RTSP/1.0\r\n"
1581 "Unsubscribe: %s\r\n",
1582 s
->filename
, rt
->last_subscription
);
1583 rtsp_send_cmd(s
, cmd
, reply
, NULL
);
1584 if (reply
->status_code
!= RTSP_STATUS_OK
)
1585 return AVERROR_INVALIDDATA
;
1586 rt
->need_subscription
= 1;
1590 if (rt
->need_subscription
) {
1591 int r
, rule_nr
, first
= 1;
1593 memcpy(rt
->real_setup_cache
, cache
,
1594 sizeof(enum AVDiscard
) * s
->nb_streams
);
1595 rt
->last_subscription
[0] = 0;
1597 snprintf(cmd
, sizeof(cmd
),
1598 "SET_PARAMETER %s RTSP/1.0\r\n"
1601 for (i
= 0; i
< rt
->nb_rtsp_streams
; i
++) {
1603 for (r
= 0; r
< s
->nb_streams
; r
++) {
1604 if (s
->streams
[r
]->priv_data
== rt
->rtsp_streams
[i
]) {
1605 if (s
->streams
[r
]->discard
!= AVDISCARD_ALL
) {
1607 av_strlcat(rt
->last_subscription
, ",",
1608 sizeof(rt
->last_subscription
));
1609 ff_rdt_subscribe_rule(
1610 rt
->last_subscription
,
1611 sizeof(rt
->last_subscription
), i
, rule_nr
);
1618 av_strlcatf(cmd
, sizeof(cmd
), "%s\r\n", rt
->last_subscription
);
1619 rtsp_send_cmd(s
, cmd
, reply
, NULL
);
1620 if (reply
->status_code
!= RTSP_STATUS_OK
)
1621 return AVERROR_INVALIDDATA
;
1622 rt
->need_subscription
= 0;
1624 if (rt
->state
== RTSP_STATE_PLAYING
)
1629 ret
= sdp_read_packet(s
, pkt
);
1634 /* send dummy request to keep TCP connection alive */
1635 if ((rt
->server_type
== RTSP_SERVER_WMS
||
1636 rt
->server_type
== RTSP_SERVER_REAL
) &&
1637 (av_gettime() - rt
->last_cmd_time
) / 1000000 >= rt
->timeout
/ 2) {
1638 if (rt
->server_type
== RTSP_SERVER_WMS
) {
1639 snprintf(cmd
, sizeof(cmd
) - 1,
1640 "GET_PARAMETER %s RTSP/1.0\r\n",
1642 rtsp_send_cmd_async(s
, cmd
, reply
, NULL
);
1644 rtsp_send_cmd_async(s
, "OPTIONS * RTSP/1.0\r\n",
1652 /* pause the stream */
1653 static int rtsp_read_pause(AVFormatContext
*s
)
1655 RTSPState
*rt
= s
->priv_data
;
1656 RTSPMessageHeader reply1
, *reply
= &reply1
;
1661 if (rt
->state
!= RTSP_STATE_PLAYING
)
1663 else if (!(rt
->server_type
== RTSP_SERVER_REAL
&& rt
->need_subscription
)) {
1664 snprintf(cmd
, sizeof(cmd
),
1665 "PAUSE %s RTSP/1.0\r\n",
1667 rtsp_send_cmd(s
, cmd
, reply
, NULL
);
1668 if (reply
->status_code
!= RTSP_STATUS_OK
) {
1672 rt
->state
= RTSP_STATE_PAUSED
;
1676 static int rtsp_read_seek(AVFormatContext
*s
, int stream_index
,
1677 int64_t timestamp
, int flags
)
1679 RTSPState
*rt
= s
->priv_data
;
1681 rt
->seek_timestamp
= av_rescale_q(timestamp
, s
->streams
[stream_index
]->time_base
, AV_TIME_BASE_Q
);
1684 case RTSP_STATE_IDLE
:
1686 case RTSP_STATE_PLAYING
:
1687 if (rtsp_read_pause(s
) != 0)
1689 rt
->state
= RTSP_STATE_SEEKING
;
1690 if (rtsp_read_play(s
) != 0)
1693 case RTSP_STATE_PAUSED
:
1694 rt
->state
= RTSP_STATE_IDLE
;
1700 static int rtsp_read_close(AVFormatContext
*s
)
1702 RTSPState
*rt
= s
->priv_data
;
1703 RTSPMessageHeader reply1
, *reply
= &reply1
;
1707 /* NOTE: it is valid to flush the buffer here */
1708 if (rt
->lower_transport
== RTSP_LOWER_TRANSPORT_TCP
) {
1709 url_fclose(&rt
->rtsp_gb
);
1712 snprintf(cmd
, sizeof(cmd
),
1713 "TEARDOWN %s RTSP/1.0\r\n",
1715 rtsp_send_cmd(s
, cmd
, reply
, NULL
);
1717 rtsp_close_streams(rt
);
1718 url_close(rt
->rtsp_hd
);
1722 AVInputFormat rtsp_demuxer
= {
1724 NULL_IF_CONFIG_SMALL("RTSP input format"),
1731 .flags
= AVFMT_NOFILE
,
1732 .read_play
= rtsp_read_play
,
1733 .read_pause
= rtsp_read_pause
,
1737 static int sdp_probe(AVProbeData
*p1
)
1739 const char *p
= p1
->buf
, *p_end
= p1
->buf
+ p1
->buf_size
;
1741 /* we look for a line beginning "c=IN IP4" */
1742 while (p
< p_end
&& *p
!= '\0') {
1743 if (p
+ sizeof("c=IN IP4") - 1 < p_end
&& av_strstart(p
, "c=IN IP4", NULL
))
1744 return AVPROBE_SCORE_MAX
/ 2;
1746 while(p
< p_end
- 1 && *p
!= '\n') p
++;
1755 #define SDP_MAX_SIZE 8192
1757 static int sdp_read_header(AVFormatContext
*s
,
1758 AVFormatParameters
*ap
)
1760 RTSPState
*rt
= s
->priv_data
;
1761 RTSPStream
*rtsp_st
;
1766 /* read the whole sdp file */
1767 /* XXX: better loading */
1768 content
= av_malloc(SDP_MAX_SIZE
);
1769 size
= get_buffer(s
->pb
, content
, SDP_MAX_SIZE
- 1);
1772 return AVERROR_INVALIDDATA
;
1774 content
[size
] ='\0';
1776 sdp_parse(s
, content
);
1779 /* open each RTP stream */
1780 for(i
=0;i
<rt
->nb_rtsp_streams
;i
++) {
1781 rtsp_st
= rt
->rtsp_streams
[i
];
1783 snprintf(url
, sizeof(url
), "rtp://%s:%d?localport=%d&ttl=%d",
1784 inet_ntoa(rtsp_st
->sdp_ip
),
1788 if (url_open(&rtsp_st
->rtp_handle
, url
, URL_RDWR
) < 0) {
1789 err
= AVERROR_INVALIDDATA
;
1792 if ((err
= rtsp_open_transport_ctx(s
, rtsp_st
)))
1797 rtsp_close_streams(rt
);
1801 static int sdp_read_close(AVFormatContext
*s
)
1803 RTSPState
*rt
= s
->priv_data
;
1804 rtsp_close_streams(rt
);
1808 AVInputFormat sdp_demuxer
= {
1810 NULL_IF_CONFIG_SMALL("SDP"),