diff options
| author | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
|---|---|---|
| committer | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
| commit | 22e28216336da876e1fd17f380ce42eaf1446769 (patch) | |
| tree | 444dad3dc7e2656992d29f34f7bce31970c122a5 /ffmpeg/libavformat/rtsp.c | |
| parent | ae5e8541f6e06e64c28719467cdf366ac57aff31 (diff) | |
chasing indexing error
Diffstat (limited to 'ffmpeg/libavformat/rtsp.c')
| -rw-r--r-- | ffmpeg/libavformat/rtsp.c | 2346 |
1 files changed, 0 insertions, 2346 deletions
diff --git a/ffmpeg/libavformat/rtsp.c b/ffmpeg/libavformat/rtsp.c deleted file mode 100644 index 9ee016c..0000000 --- a/ffmpeg/libavformat/rtsp.c +++ /dev/null @@ -1,2346 +0,0 @@ -/* - * 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/avassert.h" -#include "libavutil/base64.h" -#include "libavutil/avstring.h" -#include "libavutil/intreadwrite.h" -#include "libavutil/mathematics.h" -#include "libavutil/parseutils.h" -#include "libavutil/random_seed.h" -#include "libavutil/dict.h" -#include "libavutil/opt.h" -#include "libavutil/time.h" -#include "avformat.h" -#include "avio_internal.h" - -#if HAVE_POLL_H -#include <poll.h> -#endif -#include "internal.h" -#include "network.h" -#include "os_support.h" -#include "http.h" -#include "rtsp.h" - -#include "rtpdec.h" -#include "rtpproto.h" -#include "rdt.h" -#include "rtpdec_formats.h" -#include "rtpenc_chain.h" -#include "url.h" -#include "rtpenc.h" -#include "mpegts.h" - -/* 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 -#define DEFAULT_REORDERING_DELAY 100000 - -#define OFFSET(x) offsetof(RTSPState, x) -#define DEC AV_OPT_FLAG_DECODING_PARAM -#define ENC AV_OPT_FLAG_ENCODING_PARAM - -#define RTSP_FLAG_OPTS(name, longname) \ - { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \ - { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" } - -#define RTSP_MEDIATYPE_OPTS(name, longname) \ - { name, longname, OFFSET(media_type_mask), AV_OPT_TYPE_FLAGS, { .i64 = (1 << (AVMEDIA_TYPE_DATA+1)) - 1 }, INT_MIN, INT_MAX, DEC, "allowed_media_types" }, \ - { "video", "Video", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \ - { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \ - { "data", "Data", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" } - -#define RTSP_REORDERING_OPTS() \ - { "reorder_queue_size", "Number of packets to buffer for handling of reordered packets", OFFSET(reordering_queue_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, DEC } - -const AVOption ff_rtsp_options[] = { - { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC }, - FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags), - { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \ - { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \ - { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \ - { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" }, - { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {.i64 = (1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" }, - RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"), - { "listen", "Wait for incoming connections", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_LISTEN}, 0, 0, DEC, "rtsp_flags" }, - RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"), - { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC }, - { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC }, - { "timeout", "Maximum timeout (in seconds) to wait for incoming connections. -1 is infinite. Implies flag listen", OFFSET(initial_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, DEC }, - { "stimeout", "timeout (in micro seconds) of socket i/o operations.", OFFSET(stimeout), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC }, - RTSP_REORDERING_OPTS(), - { "user-agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = LIBAVFORMAT_IDENT}, 0, 0, DEC }, - { NULL }, -}; - -static const AVOption sdp_options[] = { - RTSP_FLAG_OPTS("sdp_flags", "SDP flags"), - { "custom_io", "Use custom IO", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_CUSTOM_IO}, 0, 0, DEC, "rtsp_flags" }, - { "rtcp_to_source", "Send RTCP packets to the source address of received packets", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_RTCP_TO_SOURCE}, 0, 0, DEC, "rtsp_flags" }, - RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"), - RTSP_REORDERING_OPTS(), - { NULL }, -}; - -static const AVOption rtp_options[] = { - RTSP_FLAG_OPTS("rtp_flags", "RTP flags"), - RTSP_REORDERING_OPTS(), - { NULL }, -}; - -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); - } -} - -static int get_sockaddr(const char *buf, struct sockaddr_storage *sock) -{ - struct addrinfo hints = { 0 }, *ai = NULL; - 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; - if (codec) - codec->codec_id = handler->codec_id; - rtsp_st->dynamic_handler = handler; - if (handler->alloc) { - rtsp_st->dynamic_protocol_context = handler->alloc(); - if (!rtsp_st->dynamic_protocol_context) - rtsp_st->dynamic_handler = NULL; - } -} - -/* 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; - - /* 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) { - /* We are in a standard case - * (from http://www.iana.org/assignments/rtp-parameters). */ - codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type); - } - - if (codec->codec_id == AV_CODEC_ID_NONE) { - 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); - } - - 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; - avpriv_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; - } - 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) - avpriv_set_pts_info(st, 32, 1, i); - break; - default: - break; - } - if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init) - rtsp_st->dynamic_handler->init(s, st->index, - rtsp_st->dynamic_protocol_context); - 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 - int nb_default_include_source_addrs; /**< Number of source-specific multicast include source IP address (from SDP content) */ - struct RTSPSource **default_include_source_addrs; /**< Source-specific multicast include source IP address (from SDP content) */ - int nb_default_exclude_source_addrs; /**< Number of source-specific multicast exclude source IP address (from SDP content) */ - struct RTSPSource **default_exclude_source_addrs; /**< Source-specific multicast exclude source IP address (from SDP content) */ -} SDPParseState; - -static void copy_default_source_addrs(struct RTSPSource **addrs, int count, - struct RTSPSource ***dest, int *dest_count) -{ - RTSPSource *rtsp_src, *rtsp_src2; - int i; - for (i = 0; i < count; i++) { - rtsp_src = addrs[i]; - rtsp_src2 = av_malloc(sizeof(*rtsp_src2)); - if (!rtsp_src2) - continue; - memcpy(rtsp_src2, rtsp_src, sizeof(*rtsp_src)); - dynarray_add(dest, dest_count, rtsp_src2); - } -} - -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; - RTSPSource *rtsp_src; - 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_dict_set(&s->metadata, "title", p, 0); - break; - case 'i': - if (s->nb_streams == 0) { - av_dict_set(&s->metadata, "comment", p, 0); - break; - } - break; - case 'm': - /* new stream */ - s1->skip_media = 0; - codec_type = AVMEDIA_TYPE_UNKNOWN; - 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; - } - if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) { - 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; - - copy_default_source_addrs(s1->default_include_source_addrs, - s1->nb_default_include_source_addrs, - &rtsp_st->include_source_addrs, - &rtsp_st->nb_include_source_addrs); - copy_default_source_addrs(s1->default_exclude_source_addrs, - s1->nb_default_exclude_source_addrs, - &rtsp_st->exclude_source_addrs, - &rtsp_st->nb_exclude_source_addrs); - - get_word(buf1, sizeof(buf1), &p); /* port */ - rtsp_st->sdp_port = atoi(buf1); - - get_word(buf1, sizeof(buf1), &p); /* protocol */ - if (!strcmp(buf1, "udp")) - rt->transport = RTSP_TRANSPORT_RAW; - else if (strstr(buf1, "/AVPF") || strstr(buf1, "/SAVPF")) - rtsp_st->feedback = 1; - - /* 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 */ - if (rt->transport == RTSP_TRANSPORT_RAW) { - if (!rt->ts && CONFIG_RTPDEC) - rt->ts = ff_mpegts_parse_open(s); - } else { - RTPDynamicProtocolHandler *handler; - handler = ff_rtp_handler_find_by_id( - rtsp_st->sdp_payload_type, AVMEDIA_TYPE_DATA); - init_rtp_handler(handler, rtsp_st, NULL); - if (handler && handler->init) - handler->init(s, -1, rtsp_st->dynamic_protocol_context); - } - } else if (rt->server_type == RTSP_SERVER_WMS && - codec_type == AVMEDIA_TYPE_DATA) { - /* RTX stream, a stream that carries all the other actual - * audio/video streams. Don't expose this to the callers. */ - } else { - st = avformat_new_stream(s, NULL); - if (!st) - return; - st->id = rt->nb_rtsp_streams - 1; - 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) - avpriv_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); - if (handler && handler->init) - handler->init(s, st->index, - rtsp_st->dynamic_protocol_context); - } - } - /* 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); - rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; - if (rtsp_st->stream_index >= 0) { - st = s->streams[rtsp_st->stream_index]; - 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 (av_strstart(p, "crypto:", &p) && s->nb_streams > 0) { - // RFC 4568 - rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; - get_word(buf1, sizeof(buf1), &p); // ignore tag - get_word(rtsp_st->crypto_suite, sizeof(rtsp_st->crypto_suite), &p); - p += strspn(p, SPACE_CHARS); - if (av_strstart(p, "inline:", &p)) - get_word(rtsp_st->crypto_params, sizeof(rtsp_st->crypto_params), &p); - } else if (av_strstart(p, "source-filter:", &p)) { - int exclude = 0; - get_word(buf1, sizeof(buf1), &p); - if (strcmp(buf1, "incl") && strcmp(buf1, "excl")) - return; - exclude = !strcmp(buf1, "excl"); - - 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") && strcmp(buf1, "*")) - return; - // not checking that the destination address actually matches or is wildcard - get_word(buf1, sizeof(buf1), &p); - - while (*p != '\0') { - rtsp_src = av_mallocz(sizeof(*rtsp_src)); - if (!rtsp_src) - return; - get_word(rtsp_src->addr, sizeof(rtsp_src->addr), &p); - if (exclude) { - if (s->nb_streams == 0) { - dynarray_add(&s1->default_exclude_source_addrs, &s1->nb_default_exclude_source_addrs, rtsp_src); - } else { - rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; - dynarray_add(&rtsp_st->exclude_source_addrs, &rtsp_st->nb_exclude_source_addrs, rtsp_src); - } - } else { - if (s->nb_streams == 0) { - dynarray_add(&s1->default_include_source_addrs, &s1->nb_default_include_source_addrs, rtsp_src); - } else { - rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; - dynarray_add(&rtsp_st->include_source_addrs, &rtsp_st->nb_include_source_addrs, rtsp_src); - } - } - } - } else { - if (rt->server_type == RTSP_SERVER_WMS) - ff_wms_parse_sdp_a_line(s, p); - if (s->nb_streams > 0) { - rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; - - if (rt->server_type == RTSP_SERVER_REAL) - ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p); - - if (rtsp_st->dynamic_handler && - rtsp_st->dynamic_handler->parse_sdp_a_line) - rtsp_st->dynamic_handler->parse_sdp_a_line(s, - rtsp_st->stream_index, - rtsp_st->dynamic_protocol_context, buf); - } - } - break; - } -} - -int ff_sdp_parse(AVFormatContext *s, const char *content) -{ - RTSPState *rt = s->priv_data; - const char *p; - int letter, i; - /* 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 = { { 0 } }, *s1 = &sdp_parse_state; - - 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++; - } - - for (i = 0; i < s1->nb_default_include_source_addrs; i++) - av_free(s1->default_include_source_addrs[i]); - av_freep(&s1->default_include_source_addrs); - for (i = 0; i < s1->nb_default_exclude_source_addrs; i++) - av_free(s1->default_exclude_source_addrs[i]); - av_freep(&s1->default_exclude_source_addrs); - - 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, int send_packets) -{ - 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; - if (CONFIG_RTSP_MUXER && rtpctx->pb && send_packets) - ff_rtsp_tcp_write_packet(s, rtsp_st); - 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 (rt->transport == RTSP_TRANSPORT_RTP && CONFIG_RTPDEC) - ff_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, j; - RTSPStream *rtsp_st; - - ff_rtsp_undo_setup(s, 0); - 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->free( - rtsp_st->dynamic_protocol_context); - for (j = 0; j < rtsp_st->nb_include_source_addrs; j++) - av_free(rtsp_st->include_source_addrs[j]); - av_freep(&rtsp_st->include_source_addrs); - for (j = 0; j < rtsp_st->nb_exclude_source_addrs; j++) - av_free(rtsp_st->exclude_source_addrs[j]); - av_freep(&rtsp_st->exclude_source_addrs); - - av_free(rtsp_st); - } - } - av_free(rt->rtsp_streams); - if (rt->asf_ctx) { - avformat_close_input(&rt->asf_ctx); - } - if (rt->ts && CONFIG_RTPDEC) - ff_mpegts_parse_close(rt->ts); - av_free(rt->p); - av_free(rt->recvbuf); -} - -int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st) -{ - RTSPState *rt = s->priv_data; - AVStream *st = NULL; - int reordering_queue_size = rt->reordering_queue_size; - if (reordering_queue_size < 0) { - if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay) - reordering_queue_size = 0; - else - reordering_queue_size = RTP_REORDER_QUEUE_DEFAULT_SIZE; - } - - /* 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) { - int ret = ff_rtp_chain_mux_open((AVFormatContext **)&rtsp_st->transport_priv, - s, st, rtsp_st->rtp_handle, - RTSP_TCP_MAX_PACKET_SIZE, - rtsp_st->stream_index); - /* Ownership of rtp_handle is passed to the rtp mux context */ - rtsp_st->rtp_handle = NULL; - if (ret < 0) - return ret; - } else if (rt->transport == RTSP_TRANSPORT_RAW) { - return 0; // Don't need to open any parser here - } 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 = ff_rtp_parse_open(s, st, - rtsp_st->sdp_payload_type, - reordering_queue_size); - - if (!rtsp_st->transport_priv) { - return AVERROR(ENOMEM); - } else if (rt->transport == RTSP_TRANSPORT_RTP && CONFIG_RTPDEC) { - if (rtsp_st->dynamic_handler) { - ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv, - rtsp_st->dynamic_protocol_context, - rtsp_st->dynamic_handler); - } - if (rtsp_st->crypto_suite[0]) - ff_rtp_parse_set_crypto(rtsp_st->transport_priv, - rtsp_st->crypto_suite, - rtsp_st->crypto_params); - } - - 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 *q; - char *p; - int v; - - q = *pp; - q += strspn(q, SPACE_CHARS); - v = strtol(q, &p, 10); - if (*p == '-') { - p++; - *min_ptr = v; - v = strtol(p, &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 (!av_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 (!av_strcasecmp (transport_protocol, "x-pn-tng") || - !av_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; - } else if (!av_strcasecmp(transport_protocol, "raw")) { - get_word_sep(profile, sizeof(profile), "/;,", &p); - lower_transport[0] = '\0'; - /* raw/raw/<protocol> */ - if (*p == '/') { - get_word_sep(lower_transport, sizeof(lower_transport), - ";,", &p); - } - th->transport = RTSP_TRANSPORT_RAW; - } - if (!av_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 == '=') { - char *end; - p++; - th->ttl = strtol(p, &end, 10); - p = end; - } - } 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)); - } - } else if (!strcmp(parameter, "mode")) { - if (*p == '=') { - p++; - get_word_sep(buf, sizeof(buf), ";, ", &p); - if (!strcmp(buf, "record") || - !strcmp(buf, "receive")) - th->mode_record = 1; - } - } - - 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); - } else if (av_stristart(p, "Public:", &p) && rt) { - if (strstr(p, "GET_PARAMETER") && - method && !strcmp(method, "OPTIONS")) - rt->get_parameter_supported = 1; - } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) { - p += strspn(p, SPACE_CHARS); - rt->accept_dynamic_rate = atoi(p); - } else if (av_stristart(p, "Content-Type:", &p)) { - p += strspn(p, SPACE_CHARS); - av_strlcpy(reply->content_type, p, sizeof(reply->content_type)); - } -} - -/* 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, request = 0; - unsigned char *content = NULL; - -start: - line_count = 0; - request = 0; - 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); - av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch); - 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); - if (!strncmp(buf1, "RTSP/", 5)) { - get_word(buf1, sizeof(buf1), &p); - reply->status_code = atoi(buf1); - av_strlcpy(reply->reason, p, sizeof(reply->reason)); - } else { - av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method - get_word(buf1, sizeof(buf1), &p); // object - request = 1; - } - } 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' && !request) - 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 (request) { - char buf[1024]; - char base64buf[AV_BASE64_SIZE(sizeof(buf))]; - const char* ptr = buf; - - if (!strcmp(reply->reason, "OPTIONS")) { - snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n"); - if (reply->seq) - av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq); - if (reply->session_id[0]) - av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", - reply->session_id); - } else { - snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n"); - } - av_strlcat(buf, "\r\n", sizeof(buf)); - - if (rt->control_transport == RTSP_MODE_TUNNEL) { - av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf)); - ptr = base64buf; - } - ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr)); - - rt->last_cmd_time = av_gettime(); - /* Even if the request from the server had data, it is not the data - * that the caller wants or expects. The memory could also be leaked - * if the actual following reply has content data. */ - if (content_ptr) - av_freep(content_ptr); - /* If method is set, this is called from ff_rtsp_send_cmd, - * where a reply to exactly this request is awaited. For - * callers from within packet receiving, we just want to - * return to the caller and go back to receiving packets. */ - if (method) - goto start; - return 0; - } - - 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 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); - av_strlcatf(buf, sizeof(buf), "User-Agent: %s\r\n", rt->user_agent); - 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 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, attempts = 0; - -retry: - cur_auth_type = rt->auth_state.auth_type; - if ((ret = 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; - attempts++; - - if (reply->status_code == 401 && - (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) && - rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2) - 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; -} - -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 = 0, j, i, err, interleave = 0, port_off; - 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 if (rt->transport == RTSP_TRANSPORT_RAW) - trans_pref = "RAW/RAW"; - else - trans_pref = "RTP/AVP"; - - /* default timeout: 1 minute */ - rt->timeout = 60; - - /* Choose a random starting offset within the first half of the - * port range, to allow for a number of ports to try even if the offset - * happens to be at the end of the random range. */ - port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2); - /* even random offset */ - port_off -= port_off & 0x01; - - for (j = rt->rtp_port_min + port_off, 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 */ - while (j <= rt->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, AVIO_FLAG_READ_WRITE, - &s->interrupt_callback, NULL)) - goto rtp_opened; - } - av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n"); - err = AVERROR(EIO); - goto fail; - - rtp_opened: - port = ff_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 && - (rtsp_st->stream_index < 0 || - 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=record", 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 (rt->accept_dynamic_rate) - av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd)); - 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] = ""; - const char *peer = host; - - if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC) - av_strlcpy(options, "?connect=1", sizeof(options)); - /* Use source address if specified */ - if (reply->transports[0].source[0]) - peer = reply->transports[0].source; - ff_url_join(url, sizeof(url), "rtp", NULL, peer, - reply->transports[0].server_port_min, "%s", options); - if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && - ff_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) - ff_rtp_send_punch_packets(rtsp_st->rtp_handle); - break; - } - case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: { - char url[1024], namebuf[50], optbuf[20] = ""; - 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; - } - if (ttl > 0) - snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl); - getnameinfo((struct sockaddr*) &addr, sizeof(addr), - namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST); - ff_url_join(url, sizeof(url), "rtp", NULL, namebuf, - port, "%s", optbuf); - if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE, - &s->interrupt_callback, NULL) < 0) { - err = AVERROR_INVALIDDATA; - goto fail; - } - break; - } - } - - if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st))) - goto fail; - } - - if (rt->nb_rtsp_streams && 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, 0); - 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]; - 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 (rt->rtp_port_max < rt->rtp_port_min) { - av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less " - "than min port %d\n", rt->rtp_port_max, - rt->rtp_port_min); - return AVERROR(EINVAL); - } - - if (!ff_network_init()) - return AVERROR(EIO); - - if (s->max_delay < 0) /* Not set by the caller */ - s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0; - - rt->control_transport = RTSP_MODE_PLAIN; - if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) { - rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP; - rt->control_transport = RTSP_MODE_TUNNEL; - } - /* Only pass through valid flags from here */ - rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1; - -redirect: - lower_transport_mask = rt->lower_transport_mask; - /* 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; - - 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, AVIO_FLAG_READ, - &s->interrupt_callback) < 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); - av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0); - - /* complete the connection */ - if (ffurl_connect(rt->rtsp_hd, NULL)) { - err = AVERROR(EIO); - goto fail; - } - - /* POST requests */ - if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE, - &s->interrupt_callback) < 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); - av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0); - av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 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, NULL)) { - err = AVERROR(EIO); - goto fail; - } - } else { - /* open the tcp connection */ - ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, - "?timeout=%d", rt->stimeout); - if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE, - &s->interrupt_callback, NULL) < 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. - * ClientChallenge is a 16-byte ID in hex - * CompanyID is a 16-byte ID in base64 - */ - "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 (!av_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; - int *fds = NULL, fdsnum, fdsidx; - - for (;;) { - if (ff_check_interrupt(&s->interrupt_callback)) - 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) { - if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle, - &fds, &fdsnum)) { - av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n"); - return ret; - } - if (fdsnum != 2) { - av_log(s, AV_LOG_ERROR, - "Number of fds %d not supported\n", fdsnum); - return AVERROR_INVALIDDATA; - } - for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) { - p[max_p].fd = fds[fdsidx]; - p[max_p++].events = POLLIN; - } - av_free(fds); - } - } - 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) { - if (rt->rtsp_flags & RTSP_FLAG_LISTEN) { - if (rt->state == RTSP_STATE_STREAMING) { - if (!ff_rtsp_parse_streaming_commands(s)) - return AVERROR_EOF; - else - av_log(s, AV_LOG_WARNING, - "Unable to answer to TEARDOWN\n"); - } else - return 0; - } else { - 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); - } -} - -static int pick_stream(AVFormatContext *s, RTSPStream **rtsp_st, - const uint8_t *buf, int len) -{ - RTSPState *rt = s->priv_data; - int i; - if (len < 0) - return len; - if (rt->nb_rtsp_streams == 1) { - *rtsp_st = rt->rtsp_streams[0]; - return len; - } - if (len >= 8 && rt->transport == RTSP_TRANSPORT_RTP) { - if (RTP_PT_IS_RTCP(rt->recvbuf[1])) { - int no_ssrc = 0; - for (i = 0; i < rt->nb_rtsp_streams; i++) { - RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv; - if (!rtpctx) - continue; - if (rtpctx->ssrc == AV_RB32(&buf[4])) { - *rtsp_st = rt->rtsp_streams[i]; - return len; - } - if (!rtpctx->ssrc) - no_ssrc = 1; - } - if (no_ssrc) { - av_log(s, AV_LOG_WARNING, - "Unable to pick stream for packet - SSRC not known for " - "all streams\n"); - return AVERROR(EAGAIN); - } - } else { - for (i = 0; i < rt->nb_rtsp_streams; i++) { - if ((buf[1] & 0x7f) == rt->rtsp_streams[i]->sdp_payload_type) { - *rtsp_st = rt->rtsp_streams[i]; - return len; - } - } - } - } - av_log(s, AV_LOG_WARNING, "Unable to pick stream for packet\n"); - return AVERROR(EAGAIN); -} - -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 if (rt->transport == RTSP_TRANSPORT_RTP) { - ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0); - } else if (rt->ts && CONFIG_RTPDEC) { - ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos); - if (ret >= 0) { - rt->recvbuf_pos += ret; - ret = rt->recvbuf_pos < rt->recvbuf_len; - } - } else - ret = -1; - if (ret == 0) { - rt->cur_transport_priv = NULL; - return 0; - } else if (ret == 1) { - return 0; - } else - rt->cur_transport_priv = NULL; - } - -redo: - 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; - } else { - wait_end = 0; - first_queue_st = NULL; - } - } - - /* read next RTP packet */ - 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) - ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, rtsp_st->rtp_handle, NULL, len); - break; - case RTSP_LOWER_TRANSPORT_CUSTOM: - if (first_queue_st && rt->transport == RTSP_TRANSPORT_RTP && - wait_end && wait_end < av_gettime()) - len = AVERROR(EAGAIN); - else - len = ffio_read_partial(s->pb, rt->recvbuf, RECVBUF_SIZE); - len = pick_stream(s, &rtsp_st, rt->recvbuf, len); - if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP) - ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, NULL, s->pb, len); - break; - } - if (len == AVERROR(EAGAIN) && first_queue_st && - rt->transport == RTSP_TRANSPORT_RTP) { - rtsp_st = first_queue_st; - ret = ff_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 if (rt->transport == RTSP_TRANSPORT_RTP) { - ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len); - if (rtsp_st->feedback) { - AVIOContext *pb = NULL; - if (rt->lower_transport == RTSP_LOWER_TRANSPORT_CUSTOM) - pb = s->pb; - ff_rtp_send_rtcp_feedback(rtsp_st->transport_priv, rtsp_st->rtp_handle, pb); - } - 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; - } - } - } else if (rt->ts && CONFIG_RTPDEC) { - ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len); - if (ret >= 0) { - if (ret < len) { - rt->recvbuf_len = len; - rt->recvbuf_pos = ret; - rt->cur_transport_priv = rt->ts; - return 1; - } else { - ret = 0; - } - } - } else { - return AVERROR_INVALIDDATA; - } -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_EXTENSION; - - while (p < p_end - 1 && *p != '\n') p++; - if (++p >= p_end) - break; - if (*p == '\r') - p++; - } - return 0; -} - -static void append_source_addrs(char *buf, int size, const char *name, - int count, struct RTSPSource **addrs) -{ - int i; - if (!count) - return; - av_strlcatf(buf, size, "&%s=%s", name, addrs[0]->addr); - for (i = 1; i < count; i++) - av_strlcatf(buf, size, ",%s", addrs[i]->addr); -} - -static int sdp_read_header(AVFormatContext *s) -{ - RTSPState *rt = s->priv_data; - RTSPStream *rtsp_st; - int size, i, err; - char *content; - char url[1024]; - - if (!ff_network_init()) - return AVERROR(EIO); - - if (s->max_delay < 0) /* Not set by the caller */ - s->max_delay = DEFAULT_REORDERING_DELAY; - if (rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO) - rt->lower_transport = RTSP_LOWER_TRANSPORT_CUSTOM; - - /* 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]; - - if (!(rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)) { - 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&connect=%d&write_to_source=%d", - rtsp_st->sdp_port, rtsp_st->sdp_ttl, - rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0, - rt->rtsp_flags & RTSP_FLAG_RTCP_TO_SOURCE ? 1 : 0); - - append_source_addrs(url, sizeof(url), "sources", - rtsp_st->nb_include_source_addrs, - rtsp_st->include_source_addrs); - append_source_addrs(url, sizeof(url), "block", - rtsp_st->nb_exclude_source_addrs, - rtsp_st->exclude_source_addrs); - if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE, - &s->interrupt_callback, NULL) < 0) { - err = AVERROR_INVALIDDATA; - goto fail; - } - } - if ((err = ff_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; -} - -static const AVClass sdp_demuxer_class = { - .class_name = "SDP demuxer", - .item_name = av_default_item_name, - .option = sdp_options, - .version = LIBAVUTIL_VERSION_INT, -}; - -AVInputFormat ff_sdp_demuxer = { - .name = "sdp", - .long_name = NULL_IF_CONFIG_SMALL("SDP"), - .priv_data_size = sizeof(RTSPState), - .read_probe = sdp_probe, - .read_header = sdp_read_header, - .read_packet = ff_rtsp_fetch_packet, - .read_close = sdp_read_close, - .priv_class = &sdp_demuxer_class, -}; -#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) -{ - uint8_t recvbuf[RTP_MAX_PACKET_LENGTH]; - char host[500], sdp[500]; - int ret, port; - URLContext* in = NULL; - int payload_type; - AVCodecContext codec = { 0 }; - struct sockaddr_storage addr; - AVIOContext pb; - socklen_t addrlen = sizeof(addr); - RTSPState *rt = s->priv_data; - - if (!ff_network_init()) - return AVERROR(EIO); - - ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ, - &s->interrupt_callback, NULL); - 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; - } - - if (RTP_PT_IS_RTCP(recvbuf[1])) - continue; - - payload_type = recvbuf[1] & 0x7f; - break; - } - getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen); - ffurl_close(in); - in = NULL; - - 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(); - - rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1; - - ret = sdp_read_header(s); - s->pb = NULL; - return ret; - -fail: - if (in) - ffurl_close(in); - ff_network_close(); - return ret; -} - -static const AVClass rtp_demuxer_class = { - .class_name = "RTP demuxer", - .item_name = av_default_item_name, - .option = rtp_options, - .version = LIBAVUTIL_VERSION_INT, -}; - -AVInputFormat ff_rtp_demuxer = { - .name = "rtp", - .long_name = NULL_IF_CONFIG_SMALL("RTP input"), - .priv_data_size = sizeof(RTSPState), - .read_probe = rtp_probe, - .read_header = rtp_read_header, - .read_packet = ff_rtsp_fetch_packet, - .read_close = sdp_read_close, - .flags = AVFMT_NOFILE, - .priv_class = &rtp_demuxer_class, -}; -#endif /* CONFIG_RTP_DEMUXER */ |