mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1946 lines
67 KiB
1946 lines
67 KiB
/* |
|
* RTSP/SDP client |
|
* Copyright (c) 2002 Fabrice Bellard |
|
* |
|
* This file is part of FFmpeg. |
|
* |
|
* FFmpeg is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* FFmpeg is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with FFmpeg; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#include "libavutil/base64.h" |
|
#include "libavutil/avstring.h" |
|
#include "libavutil/intreadwrite.h" |
|
#include "libavutil/parseutils.h" |
|
#include "libavutil/random_seed.h" |
|
#include "avformat.h" |
|
#include "avio_internal.h" |
|
|
|
#include <sys/time.h> |
|
#if HAVE_POLL_H |
|
#include <poll.h> |
|
#endif |
|
#include <strings.h> |
|
#include "internal.h" |
|
#include "network.h" |
|
#include "os_support.h" |
|
#include "http.h" |
|
#include "rtsp.h" |
|
|
|
#include "rtpdec.h" |
|
#include "rdt.h" |
|
#include "rtpdec_formats.h" |
|
#include "rtpenc_chain.h" |
|
#include "url.h" |
|
|
|
//#define DEBUG |
|
//#define DEBUG_RTP_TCP |
|
|
|
/* Timeout values for socket poll, in ms, |
|
* and read_packet(), in seconds */ |
|
#define POLL_TIMEOUT_MS 100 |
|
#define READ_PACKET_TIMEOUT_S 10 |
|
#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS |
|
#define SDP_MAX_SIZE 16384 |
|
#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH |
|
|
|
static void get_word_until_chars(char *buf, int buf_size, |
|
const char *sep, const char **pp) |
|
{ |
|
const char *p; |
|
char *q; |
|
|
|
p = *pp; |
|
p += strspn(p, SPACE_CHARS); |
|
q = buf; |
|
while (!strchr(sep, *p) && *p != '\0') { |
|
if ((q - buf) < buf_size - 1) |
|
*q++ = *p; |
|
p++; |
|
} |
|
if (buf_size > 0) |
|
*q = '\0'; |
|
*pp = p; |
|
} |
|
|
|
static void get_word_sep(char *buf, int buf_size, const char *sep, |
|
const char **pp) |
|
{ |
|
if (**pp == '/') (*pp)++; |
|
get_word_until_chars(buf, buf_size, sep, pp); |
|
} |
|
|
|
static void get_word(char *buf, int buf_size, const char **pp) |
|
{ |
|
get_word_until_chars(buf, buf_size, SPACE_CHARS, pp); |
|
} |
|
|
|
/** Parse a string p in the form of Range:npt=xx-xx, and determine the start |
|
* and end time. |
|
* Used for seeking in the rtp stream. |
|
*/ |
|
static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end) |
|
{ |
|
char buf[256]; |
|
|
|
p += strspn(p, SPACE_CHARS); |
|
if (!av_stristart(p, "npt=", &p)) |
|
return; |
|
|
|
*start = AV_NOPTS_VALUE; |
|
*end = AV_NOPTS_VALUE; |
|
|
|
get_word_sep(buf, sizeof(buf), "-", &p); |
|
av_parse_time(start, buf, 1); |
|
if (*p == '-') { |
|
p++; |
|
get_word_sep(buf, sizeof(buf), "-", &p); |
|
av_parse_time(end, buf, 1); |
|
} |
|
// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start); |
|
// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end); |
|
} |
|
|
|
static int get_sockaddr(const char *buf, struct sockaddr_storage *sock) |
|
{ |
|
struct addrinfo hints, *ai = NULL; |
|
memset(&hints, 0, sizeof(hints)); |
|
hints.ai_flags = AI_NUMERICHOST; |
|
if (getaddrinfo(buf, NULL, &hints, &ai)) |
|
return -1; |
|
memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen)); |
|
freeaddrinfo(ai); |
|
return 0; |
|
} |
|
|
|
#if CONFIG_RTPDEC |
|
static void init_rtp_handler(RTPDynamicProtocolHandler *handler, |
|
RTSPStream *rtsp_st, AVCodecContext *codec) |
|
{ |
|
if (!handler) |
|
return; |
|
codec->codec_id = handler->codec_id; |
|
rtsp_st->dynamic_handler = handler; |
|
if (handler->open) |
|
rtsp_st->dynamic_protocol_context = handler->open(); |
|
} |
|
|
|
/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */ |
|
static int sdp_parse_rtpmap(AVFormatContext *s, |
|
AVStream *st, RTSPStream *rtsp_st, |
|
int payload_type, const char *p) |
|
{ |
|
AVCodecContext *codec = st->codec; |
|
char buf[256]; |
|
int i; |
|
AVCodec *c; |
|
const char *c_name; |
|
|
|
/* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and |
|
* see if we can handle this kind of payload. |
|
* The space should normally not be there but some Real streams or |
|
* particular servers ("RealServer Version 6.1.3.970", see issue 1658) |
|
* have a trailing space. */ |
|
get_word_sep(buf, sizeof(buf), "/ ", &p); |
|
if (payload_type >= RTP_PT_PRIVATE) { |
|
RTPDynamicProtocolHandler *handler = |
|
ff_rtp_handler_find_by_name(buf, codec->codec_type); |
|
init_rtp_handler(handler, rtsp_st, codec); |
|
/* If no dynamic handler was found, check with the list of standard |
|
* allocated types, if such a stream for some reason happens to |
|
* use a private payload type. This isn't handled in rtpdec.c, since |
|
* the format name from the rtpmap line never is passed into rtpdec. */ |
|
if (!rtsp_st->dynamic_handler) |
|
codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type); |
|
} else { |
|
/* We are in a standard case |
|
* (from http://www.iana.org/assignments/rtp-parameters). */ |
|
/* search into AVRtpPayloadTypes[] */ |
|
codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type); |
|
} |
|
|
|
c = avcodec_find_decoder(codec->codec_id); |
|
if (c && c->name) |
|
c_name = c->name; |
|
else |
|
c_name = "(null)"; |
|
|
|
get_word_sep(buf, sizeof(buf), "/", &p); |
|
i = atoi(buf); |
|
switch (codec->codec_type) { |
|
case AVMEDIA_TYPE_AUDIO: |
|
av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name); |
|
codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE; |
|
codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS; |
|
if (i > 0) { |
|
codec->sample_rate = i; |
|
av_set_pts_info(st, 32, 1, codec->sample_rate); |
|
get_word_sep(buf, sizeof(buf), "/", &p); |
|
i = atoi(buf); |
|
if (i > 0) |
|
codec->channels = i; |
|
// TODO: there is a bug here; if it is a mono stream, and |
|
// less than 22000Hz, faad upconverts to stereo and twice |
|
// the frequency. No problem, but the sample rate is being |
|
// set here by the sdp line. Patch on its way. (rdm) |
|
} |
|
av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n", |
|
codec->sample_rate); |
|
av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n", |
|
codec->channels); |
|
break; |
|
case AVMEDIA_TYPE_VIDEO: |
|
av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name); |
|
if (i > 0) |
|
av_set_pts_info(st, 32, 1, i); |
|
break; |
|
default: |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
/* parse the attribute line from the fmtp a line of an sdp response. This |
|
* is broken out as a function because it is used in rtp_h264.c, which is |
|
* forthcoming. */ |
|
int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, |
|
char *value, int value_size) |
|
{ |
|
*p += strspn(*p, SPACE_CHARS); |
|
if (**p) { |
|
get_word_sep(attr, attr_size, "=", p); |
|
if (**p == '=') |
|
(*p)++; |
|
get_word_sep(value, value_size, ";", p); |
|
if (**p == ';') |
|
(*p)++; |
|
return 1; |
|
} |
|
return 0; |
|
} |
|
|
|
typedef struct SDPParseState { |
|
/* SDP only */ |
|
struct sockaddr_storage default_ip; |
|
int default_ttl; |
|
int skip_media; ///< set if an unknown m= line occurs |
|
} SDPParseState; |
|
|
|
static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1, |
|
int letter, const char *buf) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
char buf1[64], st_type[64]; |
|
const char *p; |
|
enum AVMediaType codec_type; |
|
int payload_type, i; |
|
AVStream *st; |
|
RTSPStream *rtsp_st; |
|
struct sockaddr_storage sdp_ip; |
|
int ttl; |
|
|
|
av_dlog(s, "sdp: %c='%s'\n", letter, buf); |
|
|
|
p = buf; |
|
if (s1->skip_media && letter != 'm') |
|
return; |
|
switch (letter) { |
|
case 'c': |
|
get_word(buf1, sizeof(buf1), &p); |
|
if (strcmp(buf1, "IN") != 0) |
|
return; |
|
get_word(buf1, sizeof(buf1), &p); |
|
if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6")) |
|
return; |
|
get_word_sep(buf1, sizeof(buf1), "/", &p); |
|
if (get_sockaddr(buf1, &sdp_ip)) |
|
return; |
|
ttl = 16; |
|
if (*p == '/') { |
|
p++; |
|
get_word_sep(buf1, sizeof(buf1), "/", &p); |
|
ttl = atoi(buf1); |
|
} |
|
if (s->nb_streams == 0) { |
|
s1->default_ip = sdp_ip; |
|
s1->default_ttl = ttl; |
|
} else { |
|
rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; |
|
rtsp_st->sdp_ip = sdp_ip; |
|
rtsp_st->sdp_ttl = ttl; |
|
} |
|
break; |
|
case 's': |
|
av_metadata_set2(&s->metadata, "title", p, 0); |
|
break; |
|
case 'i': |
|
if (s->nb_streams == 0) { |
|
av_metadata_set2(&s->metadata, "comment", p, 0); |
|
break; |
|
} |
|
break; |
|
case 'm': |
|
/* new stream */ |
|
s1->skip_media = 0; |
|
get_word(st_type, sizeof(st_type), &p); |
|
if (!strcmp(st_type, "audio")) { |
|
codec_type = AVMEDIA_TYPE_AUDIO; |
|
} else if (!strcmp(st_type, "video")) { |
|
codec_type = AVMEDIA_TYPE_VIDEO; |
|
} else if (!strcmp(st_type, "application")) { |
|
codec_type = AVMEDIA_TYPE_DATA; |
|
} else { |
|
s1->skip_media = 1; |
|
return; |
|
} |
|
rtsp_st = av_mallocz(sizeof(RTSPStream)); |
|
if (!rtsp_st) |
|
return; |
|
rtsp_st->stream_index = -1; |
|
dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st); |
|
|
|
rtsp_st->sdp_ip = s1->default_ip; |
|
rtsp_st->sdp_ttl = s1->default_ttl; |
|
|
|
get_word(buf1, sizeof(buf1), &p); /* port */ |
|
rtsp_st->sdp_port = atoi(buf1); |
|
|
|
get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */ |
|
|
|
/* XXX: handle list of formats */ |
|
get_word(buf1, sizeof(buf1), &p); /* format list */ |
|
rtsp_st->sdp_payload_type = atoi(buf1); |
|
|
|
if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) { |
|
/* no corresponding stream */ |
|
} else { |
|
st = av_new_stream(s, rt->nb_rtsp_streams - 1); |
|
if (!st) |
|
return; |
|
rtsp_st->stream_index = st->index; |
|
st->codec->codec_type = codec_type; |
|
if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) { |
|
RTPDynamicProtocolHandler *handler; |
|
/* if standard payload type, we can find the codec right now */ |
|
ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type); |
|
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && |
|
st->codec->sample_rate > 0) |
|
av_set_pts_info(st, 32, 1, st->codec->sample_rate); |
|
/* Even static payload types may need a custom depacketizer */ |
|
handler = ff_rtp_handler_find_by_id( |
|
rtsp_st->sdp_payload_type, st->codec->codec_type); |
|
init_rtp_handler(handler, rtsp_st, st->codec); |
|
} |
|
} |
|
/* put a default control url */ |
|
av_strlcpy(rtsp_st->control_url, rt->control_uri, |
|
sizeof(rtsp_st->control_url)); |
|
break; |
|
case 'a': |
|
if (av_strstart(p, "control:", &p)) { |
|
if (s->nb_streams == 0) { |
|
if (!strncmp(p, "rtsp://", 7)) |
|
av_strlcpy(rt->control_uri, p, |
|
sizeof(rt->control_uri)); |
|
} else { |
|
char proto[32]; |
|
/* get the control url */ |
|
rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; |
|
|
|
/* XXX: may need to add full url resolution */ |
|
av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0, |
|
NULL, NULL, 0, p); |
|
if (proto[0] == '\0') { |
|
/* relative control URL */ |
|
if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/') |
|
av_strlcat(rtsp_st->control_url, "/", |
|
sizeof(rtsp_st->control_url)); |
|
av_strlcat(rtsp_st->control_url, p, |
|
sizeof(rtsp_st->control_url)); |
|
} else |
|
av_strlcpy(rtsp_st->control_url, p, |
|
sizeof(rtsp_st->control_url)); |
|
} |
|
} else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) { |
|
/* NOTE: rtpmap is only supported AFTER the 'm=' tag */ |
|
get_word(buf1, sizeof(buf1), &p); |
|
payload_type = atoi(buf1); |
|
st = s->streams[s->nb_streams - 1]; |
|
rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; |
|
sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p); |
|
} else if (av_strstart(p, "fmtp:", &p) || |
|
av_strstart(p, "framesize:", &p)) { |
|
/* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */ |
|
// let dynamic protocol handlers have a stab at the line. |
|
get_word(buf1, sizeof(buf1), &p); |
|
payload_type = atoi(buf1); |
|
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
|
rtsp_st = rt->rtsp_streams[i]; |
|
if (rtsp_st->sdp_payload_type == payload_type && |
|
rtsp_st->dynamic_handler && |
|
rtsp_st->dynamic_handler->parse_sdp_a_line) |
|
rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, |
|
rtsp_st->dynamic_protocol_context, buf); |
|
} |
|
} else if (av_strstart(p, "range:", &p)) { |
|
int64_t start, end; |
|
|
|
// this is so that seeking on a streamed file can work. |
|
rtsp_parse_range_npt(p, &start, &end); |
|
s->start_time = start; |
|
/* AV_NOPTS_VALUE means live broadcast (and can't seek) */ |
|
s->duration = (end == AV_NOPTS_VALUE) ? |
|
AV_NOPTS_VALUE : end - start; |
|
} else if (av_strstart(p, "IsRealDataType:integer;",&p)) { |
|
if (atoi(p) == 1) |
|
rt->transport = RTSP_TRANSPORT_RDT; |
|
} else if (av_strstart(p, "SampleRate:integer;", &p) && |
|
s->nb_streams > 0) { |
|
st = s->streams[s->nb_streams - 1]; |
|
st->codec->sample_rate = atoi(p); |
|
} else { |
|
if (rt->server_type == RTSP_SERVER_WMS) |
|
ff_wms_parse_sdp_a_line(s, p); |
|
if (s->nb_streams > 0) { |
|
if (rt->server_type == RTSP_SERVER_REAL) |
|
ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p); |
|
|
|
rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; |
|
if (rtsp_st->dynamic_handler && |
|
rtsp_st->dynamic_handler->parse_sdp_a_line) |
|
rtsp_st->dynamic_handler->parse_sdp_a_line(s, |
|
s->nb_streams - 1, |
|
rtsp_st->dynamic_protocol_context, buf); |
|
} |
|
} |
|
break; |
|
} |
|
} |
|
|
|
/** |
|
* Parse the sdp description and allocate the rtp streams and the |
|
* pollfd array used for udp ones. |
|
*/ |
|
|
|
int ff_sdp_parse(AVFormatContext *s, const char *content) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
const char *p; |
|
int letter; |
|
/* Some SDP lines, particularly for Realmedia or ASF RTSP streams, |
|
* contain long SDP lines containing complete ASF Headers (several |
|
* kB) or arrays of MDPR (RM stream descriptor) headers plus |
|
* "rulebooks" describing their properties. Therefore, the SDP line |
|
* buffer is large. |
|
* |
|
* The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line |
|
* in rtpdec_xiph.c. */ |
|
char buf[16384], *q; |
|
SDPParseState sdp_parse_state, *s1 = &sdp_parse_state; |
|
|
|
memset(s1, 0, sizeof(SDPParseState)); |
|
p = content; |
|
for (;;) { |
|
p += strspn(p, SPACE_CHARS); |
|
letter = *p; |
|
if (letter == '\0') |
|
break; |
|
p++; |
|
if (*p != '=') |
|
goto next_line; |
|
p++; |
|
/* get the content */ |
|
q = buf; |
|
while (*p != '\n' && *p != '\r' && *p != '\0') { |
|
if ((q - buf) < sizeof(buf) - 1) |
|
*q++ = *p; |
|
p++; |
|
} |
|
*q = '\0'; |
|
sdp_parse_line(s, s1, letter, buf); |
|
next_line: |
|
while (*p != '\n' && *p != '\0') |
|
p++; |
|
if (*p == '\n') |
|
p++; |
|
} |
|
rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1)); |
|
if (!rt->p) return AVERROR(ENOMEM); |
|
return 0; |
|
} |
|
#endif /* CONFIG_RTPDEC */ |
|
|
|
void ff_rtsp_undo_setup(AVFormatContext *s) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
int i; |
|
|
|
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
|
RTSPStream *rtsp_st = rt->rtsp_streams[i]; |
|
if (!rtsp_st) |
|
continue; |
|
if (rtsp_st->transport_priv) { |
|
if (s->oformat) { |
|
AVFormatContext *rtpctx = rtsp_st->transport_priv; |
|
av_write_trailer(rtpctx); |
|
if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) { |
|
uint8_t *ptr; |
|
avio_close_dyn_buf(rtpctx->pb, &ptr); |
|
av_free(ptr); |
|
} else { |
|
avio_close(rtpctx->pb); |
|
} |
|
avformat_free_context(rtpctx); |
|
} else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) |
|
ff_rdt_parse_close(rtsp_st->transport_priv); |
|
else if (CONFIG_RTPDEC) |
|
rtp_parse_close(rtsp_st->transport_priv); |
|
} |
|
rtsp_st->transport_priv = NULL; |
|
if (rtsp_st->rtp_handle) |
|
ffurl_close(rtsp_st->rtp_handle); |
|
rtsp_st->rtp_handle = NULL; |
|
} |
|
} |
|
|
|
/* close and free RTSP streams */ |
|
void ff_rtsp_close_streams(AVFormatContext *s) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
int i; |
|
RTSPStream *rtsp_st; |
|
|
|
ff_rtsp_undo_setup(s); |
|
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
|
rtsp_st = rt->rtsp_streams[i]; |
|
if (rtsp_st) { |
|
if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context) |
|
rtsp_st->dynamic_handler->close( |
|
rtsp_st->dynamic_protocol_context); |
|
av_free(rtsp_st); |
|
} |
|
} |
|
av_free(rt->rtsp_streams); |
|
if (rt->asf_ctx) { |
|
av_close_input_stream (rt->asf_ctx); |
|
rt->asf_ctx = NULL; |
|
} |
|
av_free(rt->p); |
|
av_free(rt->recvbuf); |
|
} |
|
|
|
static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
AVStream *st = NULL; |
|
|
|
/* open the RTP context */ |
|
if (rtsp_st->stream_index >= 0) |
|
st = s->streams[rtsp_st->stream_index]; |
|
if (!st) |
|
s->ctx_flags |= AVFMTCTX_NOHEADER; |
|
|
|
if (s->oformat && CONFIG_RTSP_MUXER) { |
|
rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st, |
|
rtsp_st->rtp_handle, |
|
RTSP_TCP_MAX_PACKET_SIZE); |
|
/* Ownership of rtp_handle is passed to the rtp mux context */ |
|
rtsp_st->rtp_handle = NULL; |
|
} else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) |
|
rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index, |
|
rtsp_st->dynamic_protocol_context, |
|
rtsp_st->dynamic_handler); |
|
else if (CONFIG_RTPDEC) |
|
rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle, |
|
rtsp_st->sdp_payload_type, |
|
(rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay) |
|
? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE); |
|
|
|
if (!rtsp_st->transport_priv) { |
|
return AVERROR(ENOMEM); |
|
} else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) { |
|
if (rtsp_st->dynamic_handler) { |
|
rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv, |
|
rtsp_st->dynamic_protocol_context, |
|
rtsp_st->dynamic_handler); |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER |
|
static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp) |
|
{ |
|
const char *p; |
|
int v; |
|
|
|
p = *pp; |
|
p += strspn(p, SPACE_CHARS); |
|
v = strtol(p, (char **)&p, 10); |
|
if (*p == '-') { |
|
p++; |
|
*min_ptr = v; |
|
v = strtol(p, (char **)&p, 10); |
|
*max_ptr = v; |
|
} else { |
|
*min_ptr = v; |
|
*max_ptr = v; |
|
} |
|
*pp = p; |
|
} |
|
|
|
/* XXX: only one transport specification is parsed */ |
|
static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p) |
|
{ |
|
char transport_protocol[16]; |
|
char profile[16]; |
|
char lower_transport[16]; |
|
char parameter[16]; |
|
RTSPTransportField *th; |
|
char buf[256]; |
|
|
|
reply->nb_transports = 0; |
|
|
|
for (;;) { |
|
p += strspn(p, SPACE_CHARS); |
|
if (*p == '\0') |
|
break; |
|
|
|
th = &reply->transports[reply->nb_transports]; |
|
|
|
get_word_sep(transport_protocol, sizeof(transport_protocol), |
|
"/", &p); |
|
if (!strcasecmp (transport_protocol, "rtp")) { |
|
get_word_sep(profile, sizeof(profile), "/;,", &p); |
|
lower_transport[0] = '\0'; |
|
/* rtp/avp/<protocol> */ |
|
if (*p == '/') { |
|
get_word_sep(lower_transport, sizeof(lower_transport), |
|
";,", &p); |
|
} |
|
th->transport = RTSP_TRANSPORT_RTP; |
|
} else if (!strcasecmp (transport_protocol, "x-pn-tng") || |
|
!strcasecmp (transport_protocol, "x-real-rdt")) { |
|
/* x-pn-tng/<protocol> */ |
|
get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p); |
|
profile[0] = '\0'; |
|
th->transport = RTSP_TRANSPORT_RDT; |
|
} |
|
if (!strcasecmp(lower_transport, "TCP")) |
|
th->lower_transport = RTSP_LOWER_TRANSPORT_TCP; |
|
else |
|
th->lower_transport = RTSP_LOWER_TRANSPORT_UDP; |
|
|
|
if (*p == ';') |
|
p++; |
|
/* get each parameter */ |
|
while (*p != '\0' && *p != ',') { |
|
get_word_sep(parameter, sizeof(parameter), "=;,", &p); |
|
if (!strcmp(parameter, "port")) { |
|
if (*p == '=') { |
|
p++; |
|
rtsp_parse_range(&th->port_min, &th->port_max, &p); |
|
} |
|
} else if (!strcmp(parameter, "client_port")) { |
|
if (*p == '=') { |
|
p++; |
|
rtsp_parse_range(&th->client_port_min, |
|
&th->client_port_max, &p); |
|
} |
|
} else if (!strcmp(parameter, "server_port")) { |
|
if (*p == '=') { |
|
p++; |
|
rtsp_parse_range(&th->server_port_min, |
|
&th->server_port_max, &p); |
|
} |
|
} else if (!strcmp(parameter, "interleaved")) { |
|
if (*p == '=') { |
|
p++; |
|
rtsp_parse_range(&th->interleaved_min, |
|
&th->interleaved_max, &p); |
|
} |
|
} else if (!strcmp(parameter, "multicast")) { |
|
if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP) |
|
th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST; |
|
} else if (!strcmp(parameter, "ttl")) { |
|
if (*p == '=') { |
|
p++; |
|
th->ttl = strtol(p, (char **)&p, 10); |
|
} |
|
} else if (!strcmp(parameter, "destination")) { |
|
if (*p == '=') { |
|
p++; |
|
get_word_sep(buf, sizeof(buf), ";,", &p); |
|
get_sockaddr(buf, &th->destination); |
|
} |
|
} else if (!strcmp(parameter, "source")) { |
|
if (*p == '=') { |
|
p++; |
|
get_word_sep(buf, sizeof(buf), ";,", &p); |
|
av_strlcpy(th->source, buf, sizeof(th->source)); |
|
} |
|
} |
|
|
|
while (*p != ';' && *p != '\0' && *p != ',') |
|
p++; |
|
if (*p == ';') |
|
p++; |
|
} |
|
if (*p == ',') |
|
p++; |
|
|
|
reply->nb_transports++; |
|
} |
|
} |
|
|
|
static void handle_rtp_info(RTSPState *rt, const char *url, |
|
uint32_t seq, uint32_t rtptime) |
|
{ |
|
int i; |
|
if (!rtptime || !url[0]) |
|
return; |
|
if (rt->transport != RTSP_TRANSPORT_RTP) |
|
return; |
|
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
|
RTSPStream *rtsp_st = rt->rtsp_streams[i]; |
|
RTPDemuxContext *rtpctx = rtsp_st->transport_priv; |
|
if (!rtpctx) |
|
continue; |
|
if (!strcmp(rtsp_st->control_url, url)) { |
|
rtpctx->base_timestamp = rtptime; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
static void rtsp_parse_rtp_info(RTSPState *rt, const char *p) |
|
{ |
|
int read = 0; |
|
char key[20], value[1024], url[1024] = ""; |
|
uint32_t seq = 0, rtptime = 0; |
|
|
|
for (;;) { |
|
p += strspn(p, SPACE_CHARS); |
|
if (!*p) |
|
break; |
|
get_word_sep(key, sizeof(key), "=", &p); |
|
if (*p != '=') |
|
break; |
|
p++; |
|
get_word_sep(value, sizeof(value), ";, ", &p); |
|
read++; |
|
if (!strcmp(key, "url")) |
|
av_strlcpy(url, value, sizeof(url)); |
|
else if (!strcmp(key, "seq")) |
|
seq = strtoul(value, NULL, 10); |
|
else if (!strcmp(key, "rtptime")) |
|
rtptime = strtoul(value, NULL, 10); |
|
if (*p == ',') { |
|
handle_rtp_info(rt, url, seq, rtptime); |
|
url[0] = '\0'; |
|
seq = rtptime = 0; |
|
read = 0; |
|
} |
|
if (*p) |
|
p++; |
|
} |
|
if (read > 0) |
|
handle_rtp_info(rt, url, seq, rtptime); |
|
} |
|
|
|
void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf, |
|
RTSPState *rt, const char *method) |
|
{ |
|
const char *p; |
|
|
|
/* NOTE: we do case independent match for broken servers */ |
|
p = buf; |
|
if (av_stristart(p, "Session:", &p)) { |
|
int t; |
|
get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p); |
|
if (av_stristart(p, ";timeout=", &p) && |
|
(t = strtol(p, NULL, 10)) > 0) { |
|
reply->timeout = t; |
|
} |
|
} else if (av_stristart(p, "Content-Length:", &p)) { |
|
reply->content_length = strtol(p, NULL, 10); |
|
} else if (av_stristart(p, "Transport:", &p)) { |
|
rtsp_parse_transport(reply, p); |
|
} else if (av_stristart(p, "CSeq:", &p)) { |
|
reply->seq = strtol(p, NULL, 10); |
|
} else if (av_stristart(p, "Range:", &p)) { |
|
rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end); |
|
} else if (av_stristart(p, "RealChallenge1:", &p)) { |
|
p += strspn(p, SPACE_CHARS); |
|
av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge)); |
|
} else if (av_stristart(p, "Server:", &p)) { |
|
p += strspn(p, SPACE_CHARS); |
|
av_strlcpy(reply->server, p, sizeof(reply->server)); |
|
} else if (av_stristart(p, "Notice:", &p) || |
|
av_stristart(p, "X-Notice:", &p)) { |
|
reply->notice = strtol(p, NULL, 10); |
|
} else if (av_stristart(p, "Location:", &p)) { |
|
p += strspn(p, SPACE_CHARS); |
|
av_strlcpy(reply->location, p , sizeof(reply->location)); |
|
} else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) { |
|
p += strspn(p, SPACE_CHARS); |
|
ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p); |
|
} else if (av_stristart(p, "Authentication-Info:", &p) && rt) { |
|
p += strspn(p, SPACE_CHARS); |
|
ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p); |
|
} else if (av_stristart(p, "Content-Base:", &p) && rt) { |
|
p += strspn(p, SPACE_CHARS); |
|
if (method && !strcmp(method, "DESCRIBE")) |
|
av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri)); |
|
} else if (av_stristart(p, "RTP-Info:", &p) && rt) { |
|
p += strspn(p, SPACE_CHARS); |
|
if (method && !strcmp(method, "PLAY")) |
|
rtsp_parse_rtp_info(rt, p); |
|
} |
|
} |
|
|
|
/* skip a RTP/TCP interleaved packet */ |
|
void ff_rtsp_skip_packet(AVFormatContext *s) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
int ret, len, len1; |
|
uint8_t buf[1024]; |
|
|
|
ret = ffurl_read_complete(rt->rtsp_hd, buf, 3); |
|
if (ret != 3) |
|
return; |
|
len = AV_RB16(buf + 1); |
|
|
|
av_dlog(s, "skipping RTP packet len=%d\n", len); |
|
|
|
/* skip payload */ |
|
while (len > 0) { |
|
len1 = len; |
|
if (len1 > sizeof(buf)) |
|
len1 = sizeof(buf); |
|
ret = ffurl_read_complete(rt->rtsp_hd, buf, len1); |
|
if (ret != len1) |
|
return; |
|
len -= len1; |
|
} |
|
} |
|
|
|
int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply, |
|
unsigned char **content_ptr, |
|
int return_on_interleaved_data, const char *method) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
char buf[4096], buf1[1024], *q; |
|
unsigned char ch; |
|
const char *p; |
|
int ret, content_length, line_count = 0; |
|
unsigned char *content = NULL; |
|
|
|
memset(reply, 0, sizeof(*reply)); |
|
|
|
/* parse reply (XXX: use buffers) */ |
|
rt->last_reply[0] = '\0'; |
|
for (;;) { |
|
q = buf; |
|
for (;;) { |
|
ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1); |
|
#ifdef DEBUG_RTP_TCP |
|
av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch); |
|
#endif |
|
if (ret != 1) |
|
return AVERROR_EOF; |
|
if (ch == '\n') |
|
break; |
|
if (ch == '$') { |
|
/* XXX: only parse it if first char on line ? */ |
|
if (return_on_interleaved_data) { |
|
return 1; |
|
} else |
|
ff_rtsp_skip_packet(s); |
|
} else if (ch != '\r') { |
|
if ((q - buf) < sizeof(buf) - 1) |
|
*q++ = ch; |
|
} |
|
} |
|
*q = '\0'; |
|
|
|
av_dlog(s, "line='%s'\n", buf); |
|
|
|
/* test if last line */ |
|
if (buf[0] == '\0') |
|
break; |
|
p = buf; |
|
if (line_count == 0) { |
|
/* get reply code */ |
|
get_word(buf1, sizeof(buf1), &p); |
|
get_word(buf1, sizeof(buf1), &p); |
|
reply->status_code = atoi(buf1); |
|
av_strlcpy(reply->reason, p, sizeof(reply->reason)); |
|
} else { |
|
ff_rtsp_parse_line(reply, p, rt, method); |
|
av_strlcat(rt->last_reply, p, sizeof(rt->last_reply)); |
|
av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply)); |
|
} |
|
line_count++; |
|
} |
|
|
|
if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0') |
|
av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id)); |
|
|
|
content_length = reply->content_length; |
|
if (content_length > 0) { |
|
/* leave some room for a trailing '\0' (useful for simple parsing) */ |
|
content = av_malloc(content_length + 1); |
|
ffurl_read_complete(rt->rtsp_hd, content, content_length); |
|
content[content_length] = '\0'; |
|
} |
|
if (content_ptr) |
|
*content_ptr = content; |
|
else |
|
av_free(content); |
|
|
|
if (rt->seq != reply->seq) { |
|
av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n", |
|
rt->seq, reply->seq); |
|
} |
|
|
|
/* EOS */ |
|
if (reply->notice == 2101 /* End-of-Stream Reached */ || |
|
reply->notice == 2104 /* Start-of-Stream Reached */ || |
|
reply->notice == 2306 /* Continuous Feed Terminated */) { |
|
rt->state = RTSP_STATE_IDLE; |
|
} else if (reply->notice >= 4400 && reply->notice < 5500) { |
|
return AVERROR(EIO); /* data or server error */ |
|
} else if (reply->notice == 2401 /* Ticket Expired */ || |
|
(reply->notice >= 5500 && reply->notice < 5600) /* end of term */ ) |
|
return AVERROR(EPERM); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* Send a command to the RTSP server without waiting for the reply. |
|
* |
|
* @param s RTSP (de)muxer context |
|
* @param method the method for the request |
|
* @param url the target url for the request |
|
* @param headers extra header lines to include in the request |
|
* @param send_content if non-null, the data to send as request body content |
|
* @param send_content_length the length of the send_content data, or 0 if |
|
* send_content is null |
|
* |
|
* @return zero if success, nonzero otherwise |
|
*/ |
|
static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s, |
|
const char *method, const char *url, |
|
const char *headers, |
|
const unsigned char *send_content, |
|
int send_content_length) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
char buf[4096], *out_buf; |
|
char base64buf[AV_BASE64_SIZE(sizeof(buf))]; |
|
|
|
/* Add in RTSP headers */ |
|
out_buf = buf; |
|
rt->seq++; |
|
snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url); |
|
if (headers) |
|
av_strlcat(buf, headers, sizeof(buf)); |
|
av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq); |
|
if (rt->session_id[0] != '\0' && (!headers || |
|
!strstr(headers, "\nIf-Match:"))) { |
|
av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id); |
|
} |
|
if (rt->auth[0]) { |
|
char *str = ff_http_auth_create_response(&rt->auth_state, |
|
rt->auth, url, method); |
|
if (str) |
|
av_strlcat(buf, str, sizeof(buf)); |
|
av_free(str); |
|
} |
|
if (send_content_length > 0 && send_content) |
|
av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length); |
|
av_strlcat(buf, "\r\n", sizeof(buf)); |
|
|
|
/* base64 encode rtsp if tunneling */ |
|
if (rt->control_transport == RTSP_MODE_TUNNEL) { |
|
av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf)); |
|
out_buf = base64buf; |
|
} |
|
|
|
av_dlog(s, "Sending:\n%s--\n", buf); |
|
|
|
ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf)); |
|
if (send_content_length > 0 && send_content) { |
|
if (rt->control_transport == RTSP_MODE_TUNNEL) { |
|
av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests " |
|
"with content data not supported\n"); |
|
return AVERROR_PATCHWELCOME; |
|
} |
|
ffurl_write(rt->rtsp_hd_out, send_content, send_content_length); |
|
} |
|
rt->last_cmd_time = av_gettime(); |
|
|
|
return 0; |
|
} |
|
|
|
int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method, |
|
const char *url, const char *headers) |
|
{ |
|
return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0); |
|
} |
|
|
|
int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url, |
|
const char *headers, RTSPMessageHeader *reply, |
|
unsigned char **content_ptr) |
|
{ |
|
return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply, |
|
content_ptr, NULL, 0); |
|
} |
|
|
|
int ff_rtsp_send_cmd_with_content(AVFormatContext *s, |
|
const char *method, const char *url, |
|
const char *header, |
|
RTSPMessageHeader *reply, |
|
unsigned char **content_ptr, |
|
const unsigned char *send_content, |
|
int send_content_length) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
HTTPAuthType cur_auth_type; |
|
int ret; |
|
|
|
retry: |
|
cur_auth_type = rt->auth_state.auth_type; |
|
if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header, |
|
send_content, |
|
send_content_length))) |
|
return ret; |
|
|
|
if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0) |
|
return ret; |
|
|
|
if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE && |
|
rt->auth_state.auth_type != HTTP_AUTH_NONE) |
|
goto retry; |
|
|
|
if (reply->status_code > 400){ |
|
av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n", |
|
method, |
|
reply->status_code, |
|
reply->reason); |
|
av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* @return 0 on success, <0 on error, 1 if protocol is unavailable. |
|
*/ |
|
int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port, |
|
int lower_transport, const char *real_challenge) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
int rtx, j, i, err, interleave = 0; |
|
RTSPStream *rtsp_st; |
|
RTSPMessageHeader reply1, *reply = &reply1; |
|
char cmd[2048]; |
|
const char *trans_pref; |
|
|
|
if (rt->transport == RTSP_TRANSPORT_RDT) |
|
trans_pref = "x-pn-tng"; |
|
else |
|
trans_pref = "RTP/AVP"; |
|
|
|
/* default timeout: 1 minute */ |
|
rt->timeout = 60; |
|
|
|
/* for each stream, make the setup request */ |
|
/* XXX: we assume the same server is used for the control of each |
|
* RTSP stream */ |
|
|
|
for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) { |
|
char transport[2048]; |
|
|
|
/** |
|
* WMS serves all UDP data over a single connection, the RTX, which |
|
* isn't necessarily the first in the SDP but has to be the first |
|
* to be set up, else the second/third SETUP will fail with a 461. |
|
*/ |
|
if (lower_transport == RTSP_LOWER_TRANSPORT_UDP && |
|
rt->server_type == RTSP_SERVER_WMS) { |
|
if (i == 0) { |
|
/* rtx first */ |
|
for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) { |
|
int len = strlen(rt->rtsp_streams[rtx]->control_url); |
|
if (len >= 4 && |
|
!strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, |
|
"/rtx")) |
|
break; |
|
} |
|
if (rtx == rt->nb_rtsp_streams) |
|
return -1; /* no RTX found */ |
|
rtsp_st = rt->rtsp_streams[rtx]; |
|
} else |
|
rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1]; |
|
} else |
|
rtsp_st = rt->rtsp_streams[i]; |
|
|
|
/* RTP/UDP */ |
|
if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) { |
|
char buf[256]; |
|
|
|
if (rt->server_type == RTSP_SERVER_WMS && i > 1) { |
|
port = reply->transports[0].client_port_min; |
|
goto have_port; |
|
} |
|
|
|
/* first try in specified port range */ |
|
if (RTSP_RTP_PORT_MIN != 0) { |
|
while (j <= RTSP_RTP_PORT_MAX) { |
|
ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1, |
|
"?localport=%d", j); |
|
/* we will use two ports per rtp stream (rtp and rtcp) */ |
|
j += 2; |
|
if (ffurl_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) |
|
goto rtp_opened; |
|
} |
|
} |
|
|
|
#if 0 |
|
/* then try on any port */ |
|
if (ffurl_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) { |
|
err = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
#else |
|
av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n"); |
|
err = AVERROR(EIO); |
|
goto fail; |
|
#endif |
|
|
|
rtp_opened: |
|
port = rtp_get_local_rtp_port(rtsp_st->rtp_handle); |
|
have_port: |
|
snprintf(transport, sizeof(transport) - 1, |
|
"%s/UDP;", trans_pref); |
|
if (rt->server_type != RTSP_SERVER_REAL) |
|
av_strlcat(transport, "unicast;", sizeof(transport)); |
|
av_strlcatf(transport, sizeof(transport), |
|
"client_port=%d", port); |
|
if (rt->transport == RTSP_TRANSPORT_RTP && |
|
!(rt->server_type == RTSP_SERVER_WMS && i > 0)) |
|
av_strlcatf(transport, sizeof(transport), "-%d", port + 1); |
|
} |
|
|
|
/* RTP/TCP */ |
|
else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) { |
|
/** For WMS streams, the application streams are only used for |
|
* UDP. When trying to set it up for TCP streams, the server |
|
* will return an error. Therefore, we skip those streams. */ |
|
if (rt->server_type == RTSP_SERVER_WMS && |
|
s->streams[rtsp_st->stream_index]->codec->codec_type == |
|
AVMEDIA_TYPE_DATA) |
|
continue; |
|
snprintf(transport, sizeof(transport) - 1, |
|
"%s/TCP;", trans_pref); |
|
if (rt->transport != RTSP_TRANSPORT_RDT) |
|
av_strlcat(transport, "unicast;", sizeof(transport)); |
|
av_strlcatf(transport, sizeof(transport), |
|
"interleaved=%d-%d", |
|
interleave, interleave + 1); |
|
interleave += 2; |
|
} |
|
|
|
else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) { |
|
snprintf(transport, sizeof(transport) - 1, |
|
"%s/UDP;multicast", trans_pref); |
|
} |
|
if (s->oformat) { |
|
av_strlcat(transport, ";mode=receive", sizeof(transport)); |
|
} else if (rt->server_type == RTSP_SERVER_REAL || |
|
rt->server_type == RTSP_SERVER_WMS) |
|
av_strlcat(transport, ";mode=play", sizeof(transport)); |
|
snprintf(cmd, sizeof(cmd), |
|
"Transport: %s\r\n", |
|
transport); |
|
if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) { |
|
char real_res[41], real_csum[9]; |
|
ff_rdt_calc_response_and_checksum(real_res, real_csum, |
|
real_challenge); |
|
av_strlcatf(cmd, sizeof(cmd), |
|
"If-Match: %s\r\n" |
|
"RealChallenge2: %s, sd=%s\r\n", |
|
rt->session_id, real_res, real_csum); |
|
} |
|
ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL); |
|
if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) { |
|
err = 1; |
|
goto fail; |
|
} else if (reply->status_code != RTSP_STATUS_OK || |
|
reply->nb_transports != 1) { |
|
err = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
|
|
/* XXX: same protocol for all streams is required */ |
|
if (i > 0) { |
|
if (reply->transports[0].lower_transport != rt->lower_transport || |
|
reply->transports[0].transport != rt->transport) { |
|
err = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
} else { |
|
rt->lower_transport = reply->transports[0].lower_transport; |
|
rt->transport = reply->transports[0].transport; |
|
} |
|
|
|
/* Fail if the server responded with another lower transport mode |
|
* than what we requested. */ |
|
if (reply->transports[0].lower_transport != lower_transport) { |
|
av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n"); |
|
err = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
|
|
switch(reply->transports[0].lower_transport) { |
|
case RTSP_LOWER_TRANSPORT_TCP: |
|
rtsp_st->interleaved_min = reply->transports[0].interleaved_min; |
|
rtsp_st->interleaved_max = reply->transports[0].interleaved_max; |
|
break; |
|
|
|
case RTSP_LOWER_TRANSPORT_UDP: { |
|
char url[1024], options[30] = ""; |
|
|
|
if (rt->filter_source) |
|
av_strlcpy(options, "?connect=1", sizeof(options)); |
|
/* Use source address if specified */ |
|
if (reply->transports[0].source[0]) { |
|
ff_url_join(url, sizeof(url), "rtp", NULL, |
|
reply->transports[0].source, |
|
reply->transports[0].server_port_min, options); |
|
} else { |
|
ff_url_join(url, sizeof(url), "rtp", NULL, host, |
|
reply->transports[0].server_port_min, options); |
|
} |
|
if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && |
|
rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) { |
|
err = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
/* Try to initialize the connection state in a |
|
* potential NAT router by sending dummy packets. |
|
* RTP/RTCP dummy packets are used for RDT, too. |
|
*/ |
|
if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat && |
|
CONFIG_RTPDEC) |
|
rtp_send_punch_packets(rtsp_st->rtp_handle); |
|
break; |
|
} |
|
case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: { |
|
char url[1024], namebuf[50]; |
|
struct sockaddr_storage addr; |
|
int port, ttl; |
|
|
|
if (reply->transports[0].destination.ss_family) { |
|
addr = reply->transports[0].destination; |
|
port = reply->transports[0].port_min; |
|
ttl = reply->transports[0].ttl; |
|
} else { |
|
addr = rtsp_st->sdp_ip; |
|
port = rtsp_st->sdp_port; |
|
ttl = rtsp_st->sdp_ttl; |
|
} |
|
getnameinfo((struct sockaddr*) &addr, sizeof(addr), |
|
namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST); |
|
ff_url_join(url, sizeof(url), "rtp", NULL, namebuf, |
|
port, "?ttl=%d", ttl); |
|
if (ffurl_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) { |
|
err = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
break; |
|
} |
|
} |
|
|
|
if ((err = rtsp_open_transport_ctx(s, rtsp_st))) |
|
goto fail; |
|
} |
|
|
|
if (reply->timeout > 0) |
|
rt->timeout = reply->timeout; |
|
|
|
if (rt->server_type == RTSP_SERVER_REAL) |
|
rt->need_subscription = 1; |
|
|
|
return 0; |
|
|
|
fail: |
|
ff_rtsp_undo_setup(s); |
|
return err; |
|
} |
|
|
|
void ff_rtsp_close_connections(AVFormatContext *s) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out); |
|
ffurl_close(rt->rtsp_hd); |
|
rt->rtsp_hd = rt->rtsp_hd_out = NULL; |
|
} |
|
|
|
int ff_rtsp_connect(AVFormatContext *s) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128]; |
|
char *option_list, *option, *filename; |
|
int port, err, tcp_fd; |
|
RTSPMessageHeader reply1 = {0}, *reply = &reply1; |
|
int lower_transport_mask = 0; |
|
char real_challenge[64] = ""; |
|
struct sockaddr_storage peer; |
|
socklen_t peer_len = sizeof(peer); |
|
|
|
if (!ff_network_init()) |
|
return AVERROR(EIO); |
|
redirect: |
|
rt->control_transport = RTSP_MODE_PLAIN; |
|
/* extract hostname and port */ |
|
av_url_split(NULL, 0, auth, sizeof(auth), |
|
host, sizeof(host), &port, path, sizeof(path), s->filename); |
|
if (*auth) { |
|
av_strlcpy(rt->auth, auth, sizeof(rt->auth)); |
|
} |
|
if (port < 0) |
|
port = RTSP_DEFAULT_PORT; |
|
|
|
/* search for options */ |
|
option_list = strrchr(path, '?'); |
|
if (option_list) { |
|
/* Strip out the RTSP specific options, write out the rest of |
|
* the options back into the same string. */ |
|
filename = option_list; |
|
while (option_list) { |
|
/* move the option pointer */ |
|
option = ++option_list; |
|
option_list = strchr(option_list, '&'); |
|
if (option_list) |
|
*option_list = 0; |
|
|
|
/* handle the options */ |
|
if (!strcmp(option, "udp")) { |
|
lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP); |
|
} else if (!strcmp(option, "multicast")) { |
|
lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST); |
|
} else if (!strcmp(option, "tcp")) { |
|
lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP); |
|
} else if(!strcmp(option, "http")) { |
|
lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP); |
|
rt->control_transport = RTSP_MODE_TUNNEL; |
|
} else if (!strcmp(option, "filter_src")) { |
|
rt->filter_source = 1; |
|
} else { |
|
/* Write options back into the buffer, using memmove instead |
|
* of strcpy since the strings may overlap. */ |
|
int len = strlen(option); |
|
memmove(++filename, option, len); |
|
filename += len; |
|
if (option_list) *filename = '&'; |
|
} |
|
} |
|
*filename = 0; |
|
} |
|
|
|
if (!lower_transport_mask) |
|
lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1; |
|
|
|
if (s->oformat) { |
|
/* Only UDP or TCP - UDP multicast isn't supported. */ |
|
lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) | |
|
(1 << RTSP_LOWER_TRANSPORT_TCP); |
|
if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) { |
|
av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, " |
|
"only UDP and TCP are supported for output.\n"); |
|
err = AVERROR(EINVAL); |
|
goto fail; |
|
} |
|
} |
|
|
|
/* Construct the URI used in request; this is similar to s->filename, |
|
* but with authentication credentials removed and RTSP specific options |
|
* stripped out. */ |
|
ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL, |
|
host, port, "%s", path); |
|
|
|
if (rt->control_transport == RTSP_MODE_TUNNEL) { |
|
/* set up initial handshake for tunneling */ |
|
char httpname[1024]; |
|
char sessioncookie[17]; |
|
char headers[1024]; |
|
|
|
ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path); |
|
snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x", |
|
av_get_random_seed(), av_get_random_seed()); |
|
|
|
/* GET requests */ |
|
if (ffurl_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) { |
|
err = AVERROR(EIO); |
|
goto fail; |
|
} |
|
|
|
/* generate GET headers */ |
|
snprintf(headers, sizeof(headers), |
|
"x-sessioncookie: %s\r\n" |
|
"Accept: application/x-rtsp-tunnelled\r\n" |
|
"Pragma: no-cache\r\n" |
|
"Cache-Control: no-cache\r\n", |
|
sessioncookie); |
|
ff_http_set_headers(rt->rtsp_hd, headers); |
|
|
|
/* complete the connection */ |
|
if (ffurl_connect(rt->rtsp_hd)) { |
|
err = AVERROR(EIO); |
|
goto fail; |
|
} |
|
|
|
/* POST requests */ |
|
if (ffurl_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) { |
|
err = AVERROR(EIO); |
|
goto fail; |
|
} |
|
|
|
/* generate POST headers */ |
|
snprintf(headers, sizeof(headers), |
|
"x-sessioncookie: %s\r\n" |
|
"Content-Type: application/x-rtsp-tunnelled\r\n" |
|
"Pragma: no-cache\r\n" |
|
"Cache-Control: no-cache\r\n" |
|
"Content-Length: 32767\r\n" |
|
"Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n", |
|
sessioncookie); |
|
ff_http_set_headers(rt->rtsp_hd_out, headers); |
|
ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0); |
|
|
|
/* Initialize the authentication state for the POST session. The HTTP |
|
* protocol implementation doesn't properly handle multi-pass |
|
* authentication for POST requests, since it would require one of |
|
* the following: |
|
* - implementing Expect: 100-continue, which many HTTP servers |
|
* don't support anyway, even less the RTSP servers that do HTTP |
|
* tunneling |
|
* - sending the whole POST data until getting a 401 reply specifying |
|
* what authentication method to use, then resending all that data |
|
* - waiting for potential 401 replies directly after sending the |
|
* POST header (waiting for some unspecified time) |
|
* Therefore, we copy the full auth state, which works for both basic |
|
* and digest. (For digest, we would have to synchronize the nonce |
|
* count variable between the two sessions, if we'd do more requests |
|
* with the original session, though.) |
|
*/ |
|
ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd); |
|
|
|
/* complete the connection */ |
|
if (ffurl_connect(rt->rtsp_hd_out)) { |
|
err = AVERROR(EIO); |
|
goto fail; |
|
} |
|
} else { |
|
/* open the tcp connection */ |
|
ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL); |
|
if (ffurl_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) { |
|
err = AVERROR(EIO); |
|
goto fail; |
|
} |
|
rt->rtsp_hd_out = rt->rtsp_hd; |
|
} |
|
rt->seq = 0; |
|
|
|
tcp_fd = ffurl_get_file_handle(rt->rtsp_hd); |
|
if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) { |
|
getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host), |
|
NULL, 0, NI_NUMERICHOST); |
|
} |
|
|
|
/* request options supported by the server; this also detects server |
|
* type */ |
|
for (rt->server_type = RTSP_SERVER_RTP;;) { |
|
cmd[0] = 0; |
|
if (rt->server_type == RTSP_SERVER_REAL) |
|
av_strlcat(cmd, |
|
/** |
|
* The following entries are required for proper |
|
* streaming from a Realmedia server. They are |
|
* interdependent in some way although we currently |
|
* don't quite understand how. Values were copied |
|
* from mplayer SVN r23589. |
|
* @param CompanyID is a 16-byte ID in base64 |
|
* @param ClientChallenge is a 16-byte ID in hex |
|
*/ |
|
"ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n" |
|
"PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n" |
|
"CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n" |
|
"GUID: 00000000-0000-0000-0000-000000000000\r\n", |
|
sizeof(cmd)); |
|
ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL); |
|
if (reply->status_code != RTSP_STATUS_OK) { |
|
err = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
|
|
/* detect server type if not standard-compliant RTP */ |
|
if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) { |
|
rt->server_type = RTSP_SERVER_REAL; |
|
continue; |
|
} else if (!strncasecmp(reply->server, "WMServer/", 9)) { |
|
rt->server_type = RTSP_SERVER_WMS; |
|
} else if (rt->server_type == RTSP_SERVER_REAL) |
|
strcpy(real_challenge, reply->real_challenge); |
|
break; |
|
} |
|
|
|
if (s->iformat && CONFIG_RTSP_DEMUXER) |
|
err = ff_rtsp_setup_input_streams(s, reply); |
|
else if (CONFIG_RTSP_MUXER) |
|
err = ff_rtsp_setup_output_streams(s, host); |
|
if (err) |
|
goto fail; |
|
|
|
do { |
|
int lower_transport = ff_log2_tab[lower_transport_mask & |
|
~(lower_transport_mask - 1)]; |
|
|
|
err = ff_rtsp_make_setup_request(s, host, port, lower_transport, |
|
rt->server_type == RTSP_SERVER_REAL ? |
|
real_challenge : NULL); |
|
if (err < 0) |
|
goto fail; |
|
lower_transport_mask &= ~(1 << lower_transport); |
|
if (lower_transport_mask == 0 && err == 1) { |
|
err = AVERROR(EPROTONOSUPPORT); |
|
goto fail; |
|
} |
|
} while (err); |
|
|
|
rt->lower_transport_mask = lower_transport_mask; |
|
av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge)); |
|
rt->state = RTSP_STATE_IDLE; |
|
rt->seek_timestamp = 0; /* default is to start stream at position zero */ |
|
return 0; |
|
fail: |
|
ff_rtsp_close_streams(s); |
|
ff_rtsp_close_connections(s); |
|
if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) { |
|
av_strlcpy(s->filename, reply->location, sizeof(s->filename)); |
|
av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n", |
|
reply->status_code, |
|
s->filename); |
|
goto redirect; |
|
} |
|
ff_network_close(); |
|
return err; |
|
} |
|
#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */ |
|
|
|
#if CONFIG_RTPDEC |
|
static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st, |
|
uint8_t *buf, int buf_size, int64_t wait_end) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
RTSPStream *rtsp_st; |
|
int n, i, ret, tcp_fd, timeout_cnt = 0; |
|
int max_p = 0; |
|
struct pollfd *p = rt->p; |
|
|
|
for (;;) { |
|
if (url_interrupt_cb()) |
|
return AVERROR_EXIT; |
|
if (wait_end && wait_end - av_gettime() < 0) |
|
return AVERROR(EAGAIN); |
|
max_p = 0; |
|
if (rt->rtsp_hd) { |
|
tcp_fd = ffurl_get_file_handle(rt->rtsp_hd); |
|
p[max_p].fd = tcp_fd; |
|
p[max_p++].events = POLLIN; |
|
} else { |
|
tcp_fd = -1; |
|
} |
|
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
|
rtsp_st = rt->rtsp_streams[i]; |
|
if (rtsp_st->rtp_handle) { |
|
p[max_p].fd = ffurl_get_file_handle(rtsp_st->rtp_handle); |
|
p[max_p++].events = POLLIN; |
|
p[max_p].fd = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle); |
|
p[max_p++].events = POLLIN; |
|
} |
|
} |
|
n = poll(p, max_p, POLL_TIMEOUT_MS); |
|
if (n > 0) { |
|
int j = 1 - (tcp_fd == -1); |
|
timeout_cnt = 0; |
|
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
|
rtsp_st = rt->rtsp_streams[i]; |
|
if (rtsp_st->rtp_handle) { |
|
if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) { |
|
ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size); |
|
if (ret > 0) { |
|
*prtsp_st = rtsp_st; |
|
return ret; |
|
} |
|
} |
|
j+=2; |
|
} |
|
} |
|
#if CONFIG_RTSP_DEMUXER |
|
if (tcp_fd != -1 && p[0].revents & POLLIN) { |
|
RTSPMessageHeader reply; |
|
|
|
ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL); |
|
if (ret < 0) |
|
return ret; |
|
/* XXX: parse message */ |
|
if (rt->state != RTSP_STATE_STREAMING) |
|
return 0; |
|
} |
|
#endif |
|
} else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) { |
|
return AVERROR(ETIMEDOUT); |
|
} else if (n < 0 && errno != EINTR) |
|
return AVERROR(errno); |
|
} |
|
} |
|
|
|
int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
int ret, len; |
|
RTSPStream *rtsp_st, *first_queue_st = NULL; |
|
int64_t wait_end = 0; |
|
|
|
if (rt->nb_byes == rt->nb_rtsp_streams) |
|
return AVERROR_EOF; |
|
|
|
/* get next frames from the same RTP packet */ |
|
if (rt->cur_transport_priv) { |
|
if (rt->transport == RTSP_TRANSPORT_RDT) { |
|
ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0); |
|
} else |
|
ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0); |
|
if (ret == 0) { |
|
rt->cur_transport_priv = NULL; |
|
return 0; |
|
} else if (ret == 1) { |
|
return 0; |
|
} else |
|
rt->cur_transport_priv = NULL; |
|
} |
|
|
|
if (rt->transport == RTSP_TRANSPORT_RTP) { |
|
int i; |
|
int64_t first_queue_time = 0; |
|
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
|
RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv; |
|
int64_t queue_time; |
|
if (!rtpctx) |
|
continue; |
|
queue_time = ff_rtp_queued_packet_time(rtpctx); |
|
if (queue_time && (queue_time - first_queue_time < 0 || |
|
!first_queue_time)) { |
|
first_queue_time = queue_time; |
|
first_queue_st = rt->rtsp_streams[i]; |
|
} |
|
} |
|
if (first_queue_time) |
|
wait_end = first_queue_time + s->max_delay; |
|
} |
|
|
|
/* read next RTP packet */ |
|
redo: |
|
if (!rt->recvbuf) { |
|
rt->recvbuf = av_malloc(RECVBUF_SIZE); |
|
if (!rt->recvbuf) |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
switch(rt->lower_transport) { |
|
default: |
|
#if CONFIG_RTSP_DEMUXER |
|
case RTSP_LOWER_TRANSPORT_TCP: |
|
len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE); |
|
break; |
|
#endif |
|
case RTSP_LOWER_TRANSPORT_UDP: |
|
case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: |
|
len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end); |
|
if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP) |
|
rtp_check_and_send_back_rr(rtsp_st->transport_priv, len); |
|
break; |
|
} |
|
if (len == AVERROR(EAGAIN) && first_queue_st && |
|
rt->transport == RTSP_TRANSPORT_RTP) { |
|
rtsp_st = first_queue_st; |
|
ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0); |
|
goto end; |
|
} |
|
if (len < 0) |
|
return len; |
|
if (len == 0) |
|
return AVERROR_EOF; |
|
if (rt->transport == RTSP_TRANSPORT_RDT) { |
|
ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len); |
|
} else { |
|
ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len); |
|
if (ret < 0) { |
|
/* Either bad packet, or a RTCP packet. Check if the |
|
* first_rtcp_ntp_time field was initialized. */ |
|
RTPDemuxContext *rtpctx = rtsp_st->transport_priv; |
|
if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) { |
|
/* first_rtcp_ntp_time has been initialized for this stream, |
|
* copy the same value to all other uninitialized streams, |
|
* in order to map their timestamp origin to the same ntp time |
|
* as this one. */ |
|
int i; |
|
AVStream *st = NULL; |
|
if (rtsp_st->stream_index >= 0) |
|
st = s->streams[rtsp_st->stream_index]; |
|
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
|
RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv; |
|
AVStream *st2 = NULL; |
|
if (rt->rtsp_streams[i]->stream_index >= 0) |
|
st2 = s->streams[rt->rtsp_streams[i]->stream_index]; |
|
if (rtpctx2 && st && st2 && |
|
rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) { |
|
rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time; |
|
rtpctx2->rtcp_ts_offset = av_rescale_q( |
|
rtpctx->rtcp_ts_offset, st->time_base, |
|
st2->time_base); |
|
} |
|
} |
|
} |
|
if (ret == -RTCP_BYE) { |
|
rt->nb_byes++; |
|
|
|
av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n", |
|
rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams); |
|
|
|
if (rt->nb_byes == rt->nb_rtsp_streams) |
|
return AVERROR_EOF; |
|
} |
|
} |
|
} |
|
end: |
|
if (ret < 0) |
|
goto redo; |
|
if (ret == 1) |
|
/* more packets may follow, so we save the RTP context */ |
|
rt->cur_transport_priv = rtsp_st->transport_priv; |
|
|
|
return ret; |
|
} |
|
#endif /* CONFIG_RTPDEC */ |
|
|
|
#if CONFIG_SDP_DEMUXER |
|
static int sdp_probe(AVProbeData *p1) |
|
{ |
|
const char *p = p1->buf, *p_end = p1->buf + p1->buf_size; |
|
|
|
/* we look for a line beginning "c=IN IP" */ |
|
while (p < p_end && *p != '\0') { |
|
if (p + sizeof("c=IN IP") - 1 < p_end && |
|
av_strstart(p, "c=IN IP", NULL)) |
|
return AVPROBE_SCORE_MAX / 2; |
|
|
|
while (p < p_end - 1 && *p != '\n') p++; |
|
if (++p >= p_end) |
|
break; |
|
if (*p == '\r') |
|
p++; |
|
} |
|
return 0; |
|
} |
|
|
|
static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap) |
|
{ |
|
RTSPState *rt = s->priv_data; |
|
RTSPStream *rtsp_st; |
|
int size, i, err; |
|
char *content; |
|
char url[1024]; |
|
|
|
if (!ff_network_init()) |
|
return AVERROR(EIO); |
|
|
|
/* read the whole sdp file */ |
|
/* XXX: better loading */ |
|
content = av_malloc(SDP_MAX_SIZE); |
|
size = avio_read(s->pb, content, SDP_MAX_SIZE - 1); |
|
if (size <= 0) { |
|
av_free(content); |
|
return AVERROR_INVALIDDATA; |
|
} |
|
content[size] ='\0'; |
|
|
|
err = ff_sdp_parse(s, content); |
|
av_free(content); |
|
if (err) goto fail; |
|
|
|
/* open each RTP stream */ |
|
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
|
char namebuf[50]; |
|
rtsp_st = rt->rtsp_streams[i]; |
|
|
|
getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip), |
|
namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST); |
|
ff_url_join(url, sizeof(url), "rtp", NULL, |
|
namebuf, rtsp_st->sdp_port, |
|
"?localport=%d&ttl=%d", rtsp_st->sdp_port, |
|
rtsp_st->sdp_ttl); |
|
if (ffurl_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) { |
|
err = AVERROR_INVALIDDATA; |
|
goto fail; |
|
} |
|
if ((err = rtsp_open_transport_ctx(s, rtsp_st))) |
|
goto fail; |
|
} |
|
return 0; |
|
fail: |
|
ff_rtsp_close_streams(s); |
|
ff_network_close(); |
|
return err; |
|
} |
|
|
|
static int sdp_read_close(AVFormatContext *s) |
|
{ |
|
ff_rtsp_close_streams(s); |
|
ff_network_close(); |
|
return 0; |
|
} |
|
|
|
AVInputFormat ff_sdp_demuxer = { |
|
"sdp", |
|
NULL_IF_CONFIG_SMALL("SDP"), |
|
sizeof(RTSPState), |
|
sdp_probe, |
|
sdp_read_header, |
|
ff_rtsp_fetch_packet, |
|
sdp_read_close, |
|
}; |
|
#endif /* CONFIG_SDP_DEMUXER */ |
|
|
|
#if CONFIG_RTP_DEMUXER |
|
static int rtp_probe(AVProbeData *p) |
|
{ |
|
if (av_strstart(p->filename, "rtp:", NULL)) |
|
return AVPROBE_SCORE_MAX; |
|
return 0; |
|
} |
|
|
|
static int rtp_read_header(AVFormatContext *s, |
|
AVFormatParameters *ap) |
|
{ |
|
uint8_t recvbuf[1500]; |
|
char host[500], sdp[500]; |
|
int ret, port; |
|
URLContext* in = NULL; |
|
int payload_type; |
|
AVCodecContext codec; |
|
struct sockaddr_storage addr; |
|
AVIOContext pb; |
|
socklen_t addrlen = sizeof(addr); |
|
|
|
if (!ff_network_init()) |
|
return AVERROR(EIO); |
|
|
|
ret = ffurl_open(&in, s->filename, URL_RDONLY); |
|
if (ret) |
|
goto fail; |
|
|
|
while (1) { |
|
ret = ffurl_read(in, recvbuf, sizeof(recvbuf)); |
|
if (ret == AVERROR(EAGAIN)) |
|
continue; |
|
if (ret < 0) |
|
goto fail; |
|
if (ret < 12) { |
|
av_log(s, AV_LOG_WARNING, "Received too short packet\n"); |
|
continue; |
|
} |
|
|
|
if ((recvbuf[0] & 0xc0) != 0x80) { |
|
av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet " |
|
"received\n"); |
|
continue; |
|
} |
|
|
|
payload_type = recvbuf[1] & 0x7f; |
|
break; |
|
} |
|
getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen); |
|
ffurl_close(in); |
|
in = NULL; |
|
|
|
memset(&codec, 0, sizeof(codec)); |
|
if (ff_rtp_get_codec_info(&codec, payload_type)) { |
|
av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d " |
|
"without an SDP file describing it\n", |
|
payload_type); |
|
goto fail; |
|
} |
|
if (codec.codec_type != AVMEDIA_TYPE_DATA) { |
|
av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received " |
|
"properly you need an SDP file " |
|
"describing it\n"); |
|
} |
|
|
|
av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port, |
|
NULL, 0, s->filename); |
|
|
|
snprintf(sdp, sizeof(sdp), |
|
"v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n", |
|
addr.ss_family == AF_INET ? 4 : 6, host, |
|
codec.codec_type == AVMEDIA_TYPE_DATA ? "application" : |
|
codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio", |
|
port, payload_type); |
|
av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp); |
|
|
|
ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL); |
|
s->pb = &pb; |
|
|
|
/* sdp_read_header initializes this again */ |
|
ff_network_close(); |
|
|
|
ret = sdp_read_header(s, ap); |
|
s->pb = NULL; |
|
return ret; |
|
|
|
fail: |
|
if (in) |
|
ffurl_close(in); |
|
ff_network_close(); |
|
return ret; |
|
} |
|
|
|
AVInputFormat ff_rtp_demuxer = { |
|
"rtp", |
|
NULL_IF_CONFIG_SMALL("RTP input format"), |
|
sizeof(RTSPState), |
|
rtp_probe, |
|
rtp_read_header, |
|
ff_rtsp_fetch_packet, |
|
sdp_read_close, |
|
.flags = AVFMT_NOFILE, |
|
}; |
|
#endif /* CONFIG_RTP_DEMUXER */ |
|
|
|
|