yading@11: /* yading@11: * RTSP/SDP client yading@11: * Copyright (c) 2002 Fabrice Bellard yading@11: * yading@11: * This file is part of FFmpeg. yading@11: * yading@11: * FFmpeg is free software; you can redistribute it and/or yading@11: * modify it under the terms of the GNU Lesser General Public yading@11: * License as published by the Free Software Foundation; either yading@11: * version 2.1 of the License, or (at your option) any later version. yading@11: * yading@11: * FFmpeg is distributed in the hope that it will be useful, yading@11: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@11: * Lesser General Public License for more details. yading@11: * yading@11: * You should have received a copy of the GNU Lesser General Public yading@11: * License along with FFmpeg; if not, write to the Free Software yading@11: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@11: */ yading@11: yading@11: #include "libavutil/avassert.h" yading@11: #include "libavutil/base64.h" yading@11: #include "libavutil/avstring.h" yading@11: #include "libavutil/intreadwrite.h" yading@11: #include "libavutil/mathematics.h" yading@11: #include "libavutil/parseutils.h" yading@11: #include "libavutil/random_seed.h" yading@11: #include "libavutil/dict.h" yading@11: #include "libavutil/opt.h" yading@11: #include "libavutil/time.h" yading@11: #include "avformat.h" yading@11: #include "avio_internal.h" yading@11: yading@11: #if HAVE_POLL_H yading@11: #include yading@11: #endif yading@11: #include "internal.h" yading@11: #include "network.h" yading@11: #include "os_support.h" yading@11: #include "http.h" yading@11: #include "rtsp.h" yading@11: yading@11: #include "rtpdec.h" yading@11: #include "rdt.h" yading@11: #include "rtpdec_formats.h" yading@11: #include "rtpenc_chain.h" yading@11: #include "url.h" yading@11: #include "rtpenc.h" yading@11: #include "mpegts.h" yading@11: yading@11: //#define DEBUG yading@11: yading@11: /* Timeout values for socket poll, in ms, yading@11: * and read_packet(), in seconds */ yading@11: #define POLL_TIMEOUT_MS 100 yading@11: #define READ_PACKET_TIMEOUT_S 10 yading@11: #define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS yading@11: #define SDP_MAX_SIZE 16384 yading@11: #define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH yading@11: #define DEFAULT_REORDERING_DELAY 100000 yading@11: yading@11: #define OFFSET(x) offsetof(RTSPState, x) yading@11: #define DEC AV_OPT_FLAG_DECODING_PARAM yading@11: #define ENC AV_OPT_FLAG_ENCODING_PARAM yading@11: yading@11: #define RTSP_FLAG_OPTS(name, longname) \ yading@11: { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \ yading@11: { "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" }, \ yading@11: { "listen", "Wait for incoming connections", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_LISTEN}, 0, 0, DEC, "rtsp_flags" } yading@11: yading@11: #define RTSP_MEDIATYPE_OPTS(name, longname) \ yading@11: { 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" }, \ yading@11: { "video", "Video", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_VIDEO}, 0, 0, DEC, "allowed_media_types" }, \ yading@11: { "audio", "Audio", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_AUDIO}, 0, 0, DEC, "allowed_media_types" }, \ yading@11: { "data", "Data", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << AVMEDIA_TYPE_DATA}, 0, 0, DEC, "allowed_media_types" } yading@11: yading@11: #define RTSP_REORDERING_OPTS() \ yading@11: { "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 } yading@11: yading@11: const AVOption ff_rtsp_options[] = { yading@11: { "initial_pause", "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC }, yading@11: FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags), yading@11: { "rtsp_transport", "RTSP transport protocols", OFFSET(lower_transport_mask), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, DEC|ENC, "rtsp_transport" }, \ yading@11: { "udp", "UDP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP}, 0, 0, DEC|ENC, "rtsp_transport" }, \ yading@11: { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \ yading@11: { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {.i64 = 1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" }, yading@11: { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {.i64 = (1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" }, yading@11: RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"), yading@11: RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"), yading@11: { "min_port", "Minimum local UDP port", OFFSET(rtp_port_min), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MIN}, 0, 65535, DEC|ENC }, yading@11: { "max_port", "Maximum local UDP port", OFFSET(rtp_port_max), AV_OPT_TYPE_INT, {.i64 = RTSP_RTP_PORT_MAX}, 0, 65535, DEC|ENC }, yading@11: { "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 }, yading@11: { "stimeout", "timeout (in micro seconds) of socket i/o operations.", OFFSET(stimeout), AV_OPT_TYPE_INT, {.i64 = 0}, INT_MIN, INT_MAX, DEC }, yading@11: RTSP_REORDERING_OPTS(), yading@11: { NULL }, yading@11: }; yading@11: yading@11: static const AVOption sdp_options[] = { yading@11: RTSP_FLAG_OPTS("sdp_flags", "SDP flags"), yading@11: { "custom_io", "Use custom IO", 0, AV_OPT_TYPE_CONST, {.i64 = RTSP_FLAG_CUSTOM_IO}, 0, 0, DEC, "rtsp_flags" }, yading@11: RTSP_MEDIATYPE_OPTS("allowed_media_types", "Media types to accept from the server"), yading@11: RTSP_REORDERING_OPTS(), yading@11: { NULL }, yading@11: }; yading@11: yading@11: static const AVOption rtp_options[] = { yading@11: RTSP_FLAG_OPTS("rtp_flags", "RTP flags"), yading@11: RTSP_REORDERING_OPTS(), yading@11: { NULL }, yading@11: }; yading@11: yading@11: static void get_word_until_chars(char *buf, int buf_size, yading@11: const char *sep, const char **pp) yading@11: { yading@11: const char *p; yading@11: char *q; yading@11: yading@11: p = *pp; yading@11: p += strspn(p, SPACE_CHARS); yading@11: q = buf; yading@11: while (!strchr(sep, *p) && *p != '\0') { yading@11: if ((q - buf) < buf_size - 1) yading@11: *q++ = *p; yading@11: p++; yading@11: } yading@11: if (buf_size > 0) yading@11: *q = '\0'; yading@11: *pp = p; yading@11: } yading@11: yading@11: static void get_word_sep(char *buf, int buf_size, const char *sep, yading@11: const char **pp) yading@11: { yading@11: if (**pp == '/') (*pp)++; yading@11: get_word_until_chars(buf, buf_size, sep, pp); yading@11: } yading@11: yading@11: static void get_word(char *buf, int buf_size, const char **pp) yading@11: { yading@11: get_word_until_chars(buf, buf_size, SPACE_CHARS, pp); yading@11: } yading@11: yading@11: /** Parse a string p in the form of Range:npt=xx-xx, and determine the start yading@11: * and end time. yading@11: * Used for seeking in the rtp stream. yading@11: */ yading@11: static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end) yading@11: { yading@11: char buf[256]; yading@11: yading@11: p += strspn(p, SPACE_CHARS); yading@11: if (!av_stristart(p, "npt=", &p)) yading@11: return; yading@11: yading@11: *start = AV_NOPTS_VALUE; yading@11: *end = AV_NOPTS_VALUE; yading@11: yading@11: get_word_sep(buf, sizeof(buf), "-", &p); yading@11: av_parse_time(start, buf, 1); yading@11: if (*p == '-') { yading@11: p++; yading@11: get_word_sep(buf, sizeof(buf), "-", &p); yading@11: av_parse_time(end, buf, 1); yading@11: } yading@11: } yading@11: yading@11: static int get_sockaddr(const char *buf, struct sockaddr_storage *sock) yading@11: { yading@11: struct addrinfo hints = { 0 }, *ai = NULL; yading@11: hints.ai_flags = AI_NUMERICHOST; yading@11: if (getaddrinfo(buf, NULL, &hints, &ai)) yading@11: return -1; yading@11: memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen)); yading@11: freeaddrinfo(ai); yading@11: return 0; yading@11: } yading@11: yading@11: #if CONFIG_RTPDEC yading@11: static void init_rtp_handler(RTPDynamicProtocolHandler *handler, yading@11: RTSPStream *rtsp_st, AVCodecContext *codec) yading@11: { yading@11: if (!handler) yading@11: return; yading@11: if (codec) yading@11: codec->codec_id = handler->codec_id; yading@11: rtsp_st->dynamic_handler = handler; yading@11: if (handler->alloc) { yading@11: rtsp_st->dynamic_protocol_context = handler->alloc(); yading@11: if (!rtsp_st->dynamic_protocol_context) yading@11: rtsp_st->dynamic_handler = NULL; yading@11: } yading@11: } yading@11: yading@11: /* parse the rtpmap description: /[/] */ yading@11: static int sdp_parse_rtpmap(AVFormatContext *s, yading@11: AVStream *st, RTSPStream *rtsp_st, yading@11: int payload_type, const char *p) yading@11: { yading@11: AVCodecContext *codec = st->codec; yading@11: char buf[256]; yading@11: int i; yading@11: AVCodec *c; yading@11: const char *c_name; yading@11: yading@11: /* See if we can handle this kind of payload. yading@11: * The space should normally not be there but some Real streams or yading@11: * particular servers ("RealServer Version 6.1.3.970", see issue 1658) yading@11: * have a trailing space. */ yading@11: get_word_sep(buf, sizeof(buf), "/ ", &p); yading@11: if (payload_type < RTP_PT_PRIVATE) { yading@11: /* We are in a standard case yading@11: * (from http://www.iana.org/assignments/rtp-parameters). */ yading@11: codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type); yading@11: } yading@11: yading@11: if (codec->codec_id == AV_CODEC_ID_NONE) { yading@11: RTPDynamicProtocolHandler *handler = yading@11: ff_rtp_handler_find_by_name(buf, codec->codec_type); yading@11: init_rtp_handler(handler, rtsp_st, codec); yading@11: /* If no dynamic handler was found, check with the list of standard yading@11: * allocated types, if such a stream for some reason happens to yading@11: * use a private payload type. This isn't handled in rtpdec.c, since yading@11: * the format name from the rtpmap line never is passed into rtpdec. */ yading@11: if (!rtsp_st->dynamic_handler) yading@11: codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type); yading@11: } yading@11: yading@11: c = avcodec_find_decoder(codec->codec_id); yading@11: if (c && c->name) yading@11: c_name = c->name; yading@11: else yading@11: c_name = "(null)"; yading@11: yading@11: get_word_sep(buf, sizeof(buf), "/", &p); yading@11: i = atoi(buf); yading@11: switch (codec->codec_type) { yading@11: case AVMEDIA_TYPE_AUDIO: yading@11: av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name); yading@11: codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE; yading@11: codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS; yading@11: if (i > 0) { yading@11: codec->sample_rate = i; yading@11: avpriv_set_pts_info(st, 32, 1, codec->sample_rate); yading@11: get_word_sep(buf, sizeof(buf), "/", &p); yading@11: i = atoi(buf); yading@11: if (i > 0) yading@11: codec->channels = i; yading@11: } yading@11: av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n", yading@11: codec->sample_rate); yading@11: av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n", yading@11: codec->channels); yading@11: break; yading@11: case AVMEDIA_TYPE_VIDEO: yading@11: av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name); yading@11: if (i > 0) yading@11: avpriv_set_pts_info(st, 32, 1, i); yading@11: break; yading@11: default: yading@11: break; yading@11: } yading@11: if (rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->init) yading@11: rtsp_st->dynamic_handler->init(s, st->index, yading@11: rtsp_st->dynamic_protocol_context); yading@11: return 0; yading@11: } yading@11: yading@11: /* parse the attribute line from the fmtp a line of an sdp response. This yading@11: * is broken out as a function because it is used in rtp_h264.c, which is yading@11: * forthcoming. */ yading@11: int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, yading@11: char *value, int value_size) yading@11: { yading@11: *p += strspn(*p, SPACE_CHARS); yading@11: if (**p) { yading@11: get_word_sep(attr, attr_size, "=", p); yading@11: if (**p == '=') yading@11: (*p)++; yading@11: get_word_sep(value, value_size, ";", p); yading@11: if (**p == ';') yading@11: (*p)++; yading@11: return 1; yading@11: } yading@11: return 0; yading@11: } yading@11: yading@11: typedef struct SDPParseState { yading@11: /* SDP only */ yading@11: struct sockaddr_storage default_ip; yading@11: int default_ttl; yading@11: int skip_media; ///< set if an unknown m= line occurs yading@11: } SDPParseState; yading@11: yading@11: static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1, yading@11: int letter, const char *buf) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: char buf1[64], st_type[64]; yading@11: const char *p; yading@11: enum AVMediaType codec_type; yading@11: int payload_type, i; yading@11: AVStream *st; yading@11: RTSPStream *rtsp_st; yading@11: struct sockaddr_storage sdp_ip; yading@11: int ttl; yading@11: yading@11: av_dlog(s, "sdp: %c='%s'\n", letter, buf); yading@11: yading@11: p = buf; yading@11: if (s1->skip_media && letter != 'm') yading@11: return; yading@11: switch (letter) { yading@11: case 'c': yading@11: get_word(buf1, sizeof(buf1), &p); yading@11: if (strcmp(buf1, "IN") != 0) yading@11: return; yading@11: get_word(buf1, sizeof(buf1), &p); yading@11: if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6")) yading@11: return; yading@11: get_word_sep(buf1, sizeof(buf1), "/", &p); yading@11: if (get_sockaddr(buf1, &sdp_ip)) yading@11: return; yading@11: ttl = 16; yading@11: if (*p == '/') { yading@11: p++; yading@11: get_word_sep(buf1, sizeof(buf1), "/", &p); yading@11: ttl = atoi(buf1); yading@11: } yading@11: if (s->nb_streams == 0) { yading@11: s1->default_ip = sdp_ip; yading@11: s1->default_ttl = ttl; yading@11: } else { yading@11: rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; yading@11: rtsp_st->sdp_ip = sdp_ip; yading@11: rtsp_st->sdp_ttl = ttl; yading@11: } yading@11: break; yading@11: case 's': yading@11: av_dict_set(&s->metadata, "title", p, 0); yading@11: break; yading@11: case 'i': yading@11: if (s->nb_streams == 0) { yading@11: av_dict_set(&s->metadata, "comment", p, 0); yading@11: break; yading@11: } yading@11: break; yading@11: case 'm': yading@11: /* new stream */ yading@11: s1->skip_media = 0; yading@11: codec_type = AVMEDIA_TYPE_UNKNOWN; yading@11: get_word(st_type, sizeof(st_type), &p); yading@11: if (!strcmp(st_type, "audio")) { yading@11: codec_type = AVMEDIA_TYPE_AUDIO; yading@11: } else if (!strcmp(st_type, "video")) { yading@11: codec_type = AVMEDIA_TYPE_VIDEO; yading@11: } else if (!strcmp(st_type, "application")) { yading@11: codec_type = AVMEDIA_TYPE_DATA; yading@11: } yading@11: if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) { yading@11: s1->skip_media = 1; yading@11: return; yading@11: } yading@11: rtsp_st = av_mallocz(sizeof(RTSPStream)); yading@11: if (!rtsp_st) yading@11: return; yading@11: rtsp_st->stream_index = -1; yading@11: dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st); yading@11: yading@11: rtsp_st->sdp_ip = s1->default_ip; yading@11: rtsp_st->sdp_ttl = s1->default_ttl; yading@11: yading@11: get_word(buf1, sizeof(buf1), &p); /* port */ yading@11: rtsp_st->sdp_port = atoi(buf1); yading@11: yading@11: get_word(buf1, sizeof(buf1), &p); /* protocol */ yading@11: if (!strcmp(buf1, "udp")) yading@11: rt->transport = RTSP_TRANSPORT_RAW; yading@11: else if (strstr(buf1, "/AVPF") || strstr(buf1, "/SAVPF")) yading@11: rtsp_st->feedback = 1; yading@11: yading@11: /* XXX: handle list of formats */ yading@11: get_word(buf1, sizeof(buf1), &p); /* format list */ yading@11: rtsp_st->sdp_payload_type = atoi(buf1); yading@11: yading@11: if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) { yading@11: /* no corresponding stream */ yading@11: if (rt->transport == RTSP_TRANSPORT_RAW) { yading@11: if (!rt->ts && CONFIG_RTPDEC) yading@11: rt->ts = ff_mpegts_parse_open(s); yading@11: } else { yading@11: RTPDynamicProtocolHandler *handler; yading@11: handler = ff_rtp_handler_find_by_id( yading@11: rtsp_st->sdp_payload_type, AVMEDIA_TYPE_DATA); yading@11: init_rtp_handler(handler, rtsp_st, NULL); yading@11: if (handler && handler->init) yading@11: handler->init(s, -1, rtsp_st->dynamic_protocol_context); yading@11: } yading@11: } else if (rt->server_type == RTSP_SERVER_WMS && yading@11: codec_type == AVMEDIA_TYPE_DATA) { yading@11: /* RTX stream, a stream that carries all the other actual yading@11: * audio/video streams. Don't expose this to the callers. */ yading@11: } else { yading@11: st = avformat_new_stream(s, NULL); yading@11: if (!st) yading@11: return; yading@11: st->id = rt->nb_rtsp_streams - 1; yading@11: rtsp_st->stream_index = st->index; yading@11: st->codec->codec_type = codec_type; yading@11: if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) { yading@11: RTPDynamicProtocolHandler *handler; yading@11: /* if standard payload type, we can find the codec right now */ yading@11: ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type); yading@11: if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && yading@11: st->codec->sample_rate > 0) yading@11: avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate); yading@11: /* Even static payload types may need a custom depacketizer */ yading@11: handler = ff_rtp_handler_find_by_id( yading@11: rtsp_st->sdp_payload_type, st->codec->codec_type); yading@11: init_rtp_handler(handler, rtsp_st, st->codec); yading@11: if (handler && handler->init) yading@11: handler->init(s, st->index, yading@11: rtsp_st->dynamic_protocol_context); yading@11: } yading@11: } yading@11: /* put a default control url */ yading@11: av_strlcpy(rtsp_st->control_url, rt->control_uri, yading@11: sizeof(rtsp_st->control_url)); yading@11: break; yading@11: case 'a': yading@11: if (av_strstart(p, "control:", &p)) { yading@11: if (s->nb_streams == 0) { yading@11: if (!strncmp(p, "rtsp://", 7)) yading@11: av_strlcpy(rt->control_uri, p, yading@11: sizeof(rt->control_uri)); yading@11: } else { yading@11: char proto[32]; yading@11: /* get the control url */ yading@11: rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; yading@11: yading@11: /* XXX: may need to add full url resolution */ yading@11: av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0, yading@11: NULL, NULL, 0, p); yading@11: if (proto[0] == '\0') { yading@11: /* relative control URL */ yading@11: if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/') yading@11: av_strlcat(rtsp_st->control_url, "/", yading@11: sizeof(rtsp_st->control_url)); yading@11: av_strlcat(rtsp_st->control_url, p, yading@11: sizeof(rtsp_st->control_url)); yading@11: } else yading@11: av_strlcpy(rtsp_st->control_url, p, yading@11: sizeof(rtsp_st->control_url)); yading@11: } yading@11: } else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) { yading@11: /* NOTE: rtpmap is only supported AFTER the 'm=' tag */ yading@11: get_word(buf1, sizeof(buf1), &p); yading@11: payload_type = atoi(buf1); yading@11: rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; yading@11: if (rtsp_st->stream_index >= 0) { yading@11: st = s->streams[rtsp_st->stream_index]; yading@11: sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p); yading@11: } yading@11: } else if (av_strstart(p, "fmtp:", &p) || yading@11: av_strstart(p, "framesize:", &p)) { yading@11: /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */ yading@11: // let dynamic protocol handlers have a stab at the line. yading@11: get_word(buf1, sizeof(buf1), &p); yading@11: payload_type = atoi(buf1); yading@11: for (i = 0; i < rt->nb_rtsp_streams; i++) { yading@11: rtsp_st = rt->rtsp_streams[i]; yading@11: if (rtsp_st->sdp_payload_type == payload_type && yading@11: rtsp_st->dynamic_handler && yading@11: rtsp_st->dynamic_handler->parse_sdp_a_line) yading@11: rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, yading@11: rtsp_st->dynamic_protocol_context, buf); yading@11: } yading@11: } else if (av_strstart(p, "range:", &p)) { yading@11: int64_t start, end; yading@11: yading@11: // this is so that seeking on a streamed file can work. yading@11: rtsp_parse_range_npt(p, &start, &end); yading@11: s->start_time = start; yading@11: /* AV_NOPTS_VALUE means live broadcast (and can't seek) */ yading@11: s->duration = (end == AV_NOPTS_VALUE) ? yading@11: AV_NOPTS_VALUE : end - start; yading@11: } else if (av_strstart(p, "IsRealDataType:integer;",&p)) { yading@11: if (atoi(p) == 1) yading@11: rt->transport = RTSP_TRANSPORT_RDT; yading@11: } else if (av_strstart(p, "SampleRate:integer;", &p) && yading@11: s->nb_streams > 0) { yading@11: st = s->streams[s->nb_streams - 1]; yading@11: st->codec->sample_rate = atoi(p); yading@11: } else if (av_strstart(p, "crypto:", &p) && s->nb_streams > 0) { yading@11: // RFC 4568 yading@11: rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; yading@11: get_word(buf1, sizeof(buf1), &p); // ignore tag yading@11: get_word(rtsp_st->crypto_suite, sizeof(rtsp_st->crypto_suite), &p); yading@11: p += strspn(p, SPACE_CHARS); yading@11: if (av_strstart(p, "inline:", &p)) yading@11: get_word(rtsp_st->crypto_params, sizeof(rtsp_st->crypto_params), &p); yading@11: } else { yading@11: if (rt->server_type == RTSP_SERVER_WMS) yading@11: ff_wms_parse_sdp_a_line(s, p); yading@11: if (s->nb_streams > 0) { yading@11: rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1]; yading@11: yading@11: if (rt->server_type == RTSP_SERVER_REAL) yading@11: ff_real_parse_sdp_a_line(s, rtsp_st->stream_index, p); yading@11: yading@11: if (rtsp_st->dynamic_handler && yading@11: rtsp_st->dynamic_handler->parse_sdp_a_line) yading@11: rtsp_st->dynamic_handler->parse_sdp_a_line(s, yading@11: rtsp_st->stream_index, yading@11: rtsp_st->dynamic_protocol_context, buf); yading@11: } yading@11: } yading@11: break; yading@11: } yading@11: } yading@11: yading@11: int ff_sdp_parse(AVFormatContext *s, const char *content) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: const char *p; yading@11: int letter; yading@11: /* Some SDP lines, particularly for Realmedia or ASF RTSP streams, yading@11: * contain long SDP lines containing complete ASF Headers (several yading@11: * kB) or arrays of MDPR (RM stream descriptor) headers plus yading@11: * "rulebooks" describing their properties. Therefore, the SDP line yading@11: * buffer is large. yading@11: * yading@11: * The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line yading@11: * in rtpdec_xiph.c. */ yading@11: char buf[16384], *q; yading@11: SDPParseState sdp_parse_state = { { 0 } }, *s1 = &sdp_parse_state; yading@11: yading@11: p = content; yading@11: for (;;) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: letter = *p; yading@11: if (letter == '\0') yading@11: break; yading@11: p++; yading@11: if (*p != '=') yading@11: goto next_line; yading@11: p++; yading@11: /* get the content */ yading@11: q = buf; yading@11: while (*p != '\n' && *p != '\r' && *p != '\0') { yading@11: if ((q - buf) < sizeof(buf) - 1) yading@11: *q++ = *p; yading@11: p++; yading@11: } yading@11: *q = '\0'; yading@11: sdp_parse_line(s, s1, letter, buf); yading@11: next_line: yading@11: while (*p != '\n' && *p != '\0') yading@11: p++; yading@11: if (*p == '\n') yading@11: p++; yading@11: } yading@11: rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1)); yading@11: if (!rt->p) return AVERROR(ENOMEM); yading@11: return 0; yading@11: } yading@11: #endif /* CONFIG_RTPDEC */ yading@11: yading@11: void ff_rtsp_undo_setup(AVFormatContext *s) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: int i; yading@11: yading@11: for (i = 0; i < rt->nb_rtsp_streams; i++) { yading@11: RTSPStream *rtsp_st = rt->rtsp_streams[i]; yading@11: if (!rtsp_st) yading@11: continue; yading@11: if (rtsp_st->transport_priv) { yading@11: if (s->oformat) { yading@11: AVFormatContext *rtpctx = rtsp_st->transport_priv; yading@11: av_write_trailer(rtpctx); yading@11: if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) { yading@11: uint8_t *ptr; yading@11: avio_close_dyn_buf(rtpctx->pb, &ptr); yading@11: av_free(ptr); yading@11: } else { yading@11: avio_close(rtpctx->pb); yading@11: } yading@11: avformat_free_context(rtpctx); yading@11: } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) yading@11: ff_rdt_parse_close(rtsp_st->transport_priv); yading@11: else if (rt->transport == RTSP_TRANSPORT_RTP && CONFIG_RTPDEC) yading@11: ff_rtp_parse_close(rtsp_st->transport_priv); yading@11: } yading@11: rtsp_st->transport_priv = NULL; yading@11: if (rtsp_st->rtp_handle) yading@11: ffurl_close(rtsp_st->rtp_handle); yading@11: rtsp_st->rtp_handle = NULL; yading@11: } yading@11: } yading@11: yading@11: /* close and free RTSP streams */ yading@11: void ff_rtsp_close_streams(AVFormatContext *s) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: int i; yading@11: RTSPStream *rtsp_st; yading@11: yading@11: ff_rtsp_undo_setup(s); yading@11: for (i = 0; i < rt->nb_rtsp_streams; i++) { yading@11: rtsp_st = rt->rtsp_streams[i]; yading@11: if (rtsp_st) { yading@11: if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context) yading@11: rtsp_st->dynamic_handler->free( yading@11: rtsp_st->dynamic_protocol_context); yading@11: av_free(rtsp_st); yading@11: } yading@11: } yading@11: av_free(rt->rtsp_streams); yading@11: if (rt->asf_ctx) { yading@11: avformat_close_input(&rt->asf_ctx); yading@11: } yading@11: if (rt->ts && CONFIG_RTPDEC) yading@11: ff_mpegts_parse_close(rt->ts); yading@11: av_free(rt->p); yading@11: av_free(rt->recvbuf); yading@11: } yading@11: yading@11: int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: AVStream *st = NULL; yading@11: int reordering_queue_size = rt->reordering_queue_size; yading@11: if (reordering_queue_size < 0) { yading@11: if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay) yading@11: reordering_queue_size = 0; yading@11: else yading@11: reordering_queue_size = RTP_REORDER_QUEUE_DEFAULT_SIZE; yading@11: } yading@11: yading@11: /* open the RTP context */ yading@11: if (rtsp_st->stream_index >= 0) yading@11: st = s->streams[rtsp_st->stream_index]; yading@11: if (!st) yading@11: s->ctx_flags |= AVFMTCTX_NOHEADER; yading@11: yading@11: if (s->oformat && CONFIG_RTSP_MUXER) { yading@11: int ret = ff_rtp_chain_mux_open((AVFormatContext **)&rtsp_st->transport_priv, s, st, yading@11: rtsp_st->rtp_handle, yading@11: RTSP_TCP_MAX_PACKET_SIZE, yading@11: rtsp_st->stream_index); yading@11: /* Ownership of rtp_handle is passed to the rtp mux context */ yading@11: rtsp_st->rtp_handle = NULL; yading@11: if (ret < 0) yading@11: return ret; yading@11: } else if (rt->transport == RTSP_TRANSPORT_RAW) { yading@11: return 0; // Don't need to open any parser here yading@11: } else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) yading@11: rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index, yading@11: rtsp_st->dynamic_protocol_context, yading@11: rtsp_st->dynamic_handler); yading@11: else if (CONFIG_RTPDEC) yading@11: rtsp_st->transport_priv = ff_rtp_parse_open(s, st, yading@11: rtsp_st->sdp_payload_type, yading@11: reordering_queue_size); yading@11: yading@11: if (!rtsp_st->transport_priv) { yading@11: return AVERROR(ENOMEM); yading@11: } else if (rt->transport == RTSP_TRANSPORT_RTP && CONFIG_RTPDEC) { yading@11: if (rtsp_st->dynamic_handler) { yading@11: ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv, yading@11: rtsp_st->dynamic_protocol_context, yading@11: rtsp_st->dynamic_handler); yading@11: } yading@11: if (rtsp_st->crypto_suite[0]) yading@11: ff_rtp_parse_set_crypto(rtsp_st->transport_priv, yading@11: rtsp_st->crypto_suite, yading@11: rtsp_st->crypto_params); yading@11: } yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: #if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER yading@11: static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp) yading@11: { yading@11: const char *q; yading@11: char *p; yading@11: int v; yading@11: yading@11: q = *pp; yading@11: q += strspn(q, SPACE_CHARS); yading@11: v = strtol(q, &p, 10); yading@11: if (*p == '-') { yading@11: p++; yading@11: *min_ptr = v; yading@11: v = strtol(p, &p, 10); yading@11: *max_ptr = v; yading@11: } else { yading@11: *min_ptr = v; yading@11: *max_ptr = v; yading@11: } yading@11: *pp = p; yading@11: } yading@11: yading@11: /* XXX: only one transport specification is parsed */ yading@11: static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p) yading@11: { yading@11: char transport_protocol[16]; yading@11: char profile[16]; yading@11: char lower_transport[16]; yading@11: char parameter[16]; yading@11: RTSPTransportField *th; yading@11: char buf[256]; yading@11: yading@11: reply->nb_transports = 0; yading@11: yading@11: for (;;) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: if (*p == '\0') yading@11: break; yading@11: yading@11: th = &reply->transports[reply->nb_transports]; yading@11: yading@11: get_word_sep(transport_protocol, sizeof(transport_protocol), yading@11: "/", &p); yading@11: if (!av_strcasecmp (transport_protocol, "rtp")) { yading@11: get_word_sep(profile, sizeof(profile), "/;,", &p); yading@11: lower_transport[0] = '\0'; yading@11: /* rtp/avp/ */ yading@11: if (*p == '/') { yading@11: get_word_sep(lower_transport, sizeof(lower_transport), yading@11: ";,", &p); yading@11: } yading@11: th->transport = RTSP_TRANSPORT_RTP; yading@11: } else if (!av_strcasecmp (transport_protocol, "x-pn-tng") || yading@11: !av_strcasecmp (transport_protocol, "x-real-rdt")) { yading@11: /* x-pn-tng/ */ yading@11: get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p); yading@11: profile[0] = '\0'; yading@11: th->transport = RTSP_TRANSPORT_RDT; yading@11: } else if (!av_strcasecmp(transport_protocol, "raw")) { yading@11: get_word_sep(profile, sizeof(profile), "/;,", &p); yading@11: lower_transport[0] = '\0'; yading@11: /* raw/raw/ */ yading@11: if (*p == '/') { yading@11: get_word_sep(lower_transport, sizeof(lower_transport), yading@11: ";,", &p); yading@11: } yading@11: th->transport = RTSP_TRANSPORT_RAW; yading@11: } yading@11: if (!av_strcasecmp(lower_transport, "TCP")) yading@11: th->lower_transport = RTSP_LOWER_TRANSPORT_TCP; yading@11: else yading@11: th->lower_transport = RTSP_LOWER_TRANSPORT_UDP; yading@11: yading@11: if (*p == ';') yading@11: p++; yading@11: /* get each parameter */ yading@11: while (*p != '\0' && *p != ',') { yading@11: get_word_sep(parameter, sizeof(parameter), "=;,", &p); yading@11: if (!strcmp(parameter, "port")) { yading@11: if (*p == '=') { yading@11: p++; yading@11: rtsp_parse_range(&th->port_min, &th->port_max, &p); yading@11: } yading@11: } else if (!strcmp(parameter, "client_port")) { yading@11: if (*p == '=') { yading@11: p++; yading@11: rtsp_parse_range(&th->client_port_min, yading@11: &th->client_port_max, &p); yading@11: } yading@11: } else if (!strcmp(parameter, "server_port")) { yading@11: if (*p == '=') { yading@11: p++; yading@11: rtsp_parse_range(&th->server_port_min, yading@11: &th->server_port_max, &p); yading@11: } yading@11: } else if (!strcmp(parameter, "interleaved")) { yading@11: if (*p == '=') { yading@11: p++; yading@11: rtsp_parse_range(&th->interleaved_min, yading@11: &th->interleaved_max, &p); yading@11: } yading@11: } else if (!strcmp(parameter, "multicast")) { yading@11: if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP) yading@11: th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST; yading@11: } else if (!strcmp(parameter, "ttl")) { yading@11: if (*p == '=') { yading@11: char *end; yading@11: p++; yading@11: th->ttl = strtol(p, &end, 10); yading@11: p = end; yading@11: } yading@11: } else if (!strcmp(parameter, "destination")) { yading@11: if (*p == '=') { yading@11: p++; yading@11: get_word_sep(buf, sizeof(buf), ";,", &p); yading@11: get_sockaddr(buf, &th->destination); yading@11: } yading@11: } else if (!strcmp(parameter, "source")) { yading@11: if (*p == '=') { yading@11: p++; yading@11: get_word_sep(buf, sizeof(buf), ";,", &p); yading@11: av_strlcpy(th->source, buf, sizeof(th->source)); yading@11: } yading@11: } else if (!strcmp(parameter, "mode")) { yading@11: if (*p == '=') { yading@11: p++; yading@11: get_word_sep(buf, sizeof(buf), ";, ", &p); yading@11: if (!strcmp(buf, "record") || yading@11: !strcmp(buf, "receive")) yading@11: th->mode_record = 1; yading@11: } yading@11: } yading@11: yading@11: while (*p != ';' && *p != '\0' && *p != ',') yading@11: p++; yading@11: if (*p == ';') yading@11: p++; yading@11: } yading@11: if (*p == ',') yading@11: p++; yading@11: yading@11: reply->nb_transports++; yading@11: } yading@11: } yading@11: yading@11: static void handle_rtp_info(RTSPState *rt, const char *url, yading@11: uint32_t seq, uint32_t rtptime) yading@11: { yading@11: int i; yading@11: if (!rtptime || !url[0]) yading@11: return; yading@11: if (rt->transport != RTSP_TRANSPORT_RTP) yading@11: return; yading@11: for (i = 0; i < rt->nb_rtsp_streams; i++) { yading@11: RTSPStream *rtsp_st = rt->rtsp_streams[i]; yading@11: RTPDemuxContext *rtpctx = rtsp_st->transport_priv; yading@11: if (!rtpctx) yading@11: continue; yading@11: if (!strcmp(rtsp_st->control_url, url)) { yading@11: rtpctx->base_timestamp = rtptime; yading@11: break; yading@11: } yading@11: } yading@11: } yading@11: yading@11: static void rtsp_parse_rtp_info(RTSPState *rt, const char *p) yading@11: { yading@11: int read = 0; yading@11: char key[20], value[1024], url[1024] = ""; yading@11: uint32_t seq = 0, rtptime = 0; yading@11: yading@11: for (;;) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: if (!*p) yading@11: break; yading@11: get_word_sep(key, sizeof(key), "=", &p); yading@11: if (*p != '=') yading@11: break; yading@11: p++; yading@11: get_word_sep(value, sizeof(value), ";, ", &p); yading@11: read++; yading@11: if (!strcmp(key, "url")) yading@11: av_strlcpy(url, value, sizeof(url)); yading@11: else if (!strcmp(key, "seq")) yading@11: seq = strtoul(value, NULL, 10); yading@11: else if (!strcmp(key, "rtptime")) yading@11: rtptime = strtoul(value, NULL, 10); yading@11: if (*p == ',') { yading@11: handle_rtp_info(rt, url, seq, rtptime); yading@11: url[0] = '\0'; yading@11: seq = rtptime = 0; yading@11: read = 0; yading@11: } yading@11: if (*p) yading@11: p++; yading@11: } yading@11: if (read > 0) yading@11: handle_rtp_info(rt, url, seq, rtptime); yading@11: } yading@11: yading@11: void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf, yading@11: RTSPState *rt, const char *method) yading@11: { yading@11: const char *p; yading@11: yading@11: /* NOTE: we do case independent match for broken servers */ yading@11: p = buf; yading@11: if (av_stristart(p, "Session:", &p)) { yading@11: int t; yading@11: get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p); yading@11: if (av_stristart(p, ";timeout=", &p) && yading@11: (t = strtol(p, NULL, 10)) > 0) { yading@11: reply->timeout = t; yading@11: } yading@11: } else if (av_stristart(p, "Content-Length:", &p)) { yading@11: reply->content_length = strtol(p, NULL, 10); yading@11: } else if (av_stristart(p, "Transport:", &p)) { yading@11: rtsp_parse_transport(reply, p); yading@11: } else if (av_stristart(p, "CSeq:", &p)) { yading@11: reply->seq = strtol(p, NULL, 10); yading@11: } else if (av_stristart(p, "Range:", &p)) { yading@11: rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end); yading@11: } else if (av_stristart(p, "RealChallenge1:", &p)) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge)); yading@11: } else if (av_stristart(p, "Server:", &p)) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: av_strlcpy(reply->server, p, sizeof(reply->server)); yading@11: } else if (av_stristart(p, "Notice:", &p) || yading@11: av_stristart(p, "X-Notice:", &p)) { yading@11: reply->notice = strtol(p, NULL, 10); yading@11: } else if (av_stristart(p, "Location:", &p)) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: av_strlcpy(reply->location, p , sizeof(reply->location)); yading@11: } else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p); yading@11: } else if (av_stristart(p, "Authentication-Info:", &p) && rt) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p); yading@11: } else if (av_stristart(p, "Content-Base:", &p) && rt) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: if (method && !strcmp(method, "DESCRIBE")) yading@11: av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri)); yading@11: } else if (av_stristart(p, "RTP-Info:", &p) && rt) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: if (method && !strcmp(method, "PLAY")) yading@11: rtsp_parse_rtp_info(rt, p); yading@11: } else if (av_stristart(p, "Public:", &p) && rt) { yading@11: if (strstr(p, "GET_PARAMETER") && yading@11: method && !strcmp(method, "OPTIONS")) yading@11: rt->get_parameter_supported = 1; yading@11: } else if (av_stristart(p, "x-Accept-Dynamic-Rate:", &p) && rt) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: rt->accept_dynamic_rate = atoi(p); yading@11: } else if (av_stristart(p, "Content-Type:", &p)) { yading@11: p += strspn(p, SPACE_CHARS); yading@11: av_strlcpy(reply->content_type, p, sizeof(reply->content_type)); yading@11: } yading@11: } yading@11: yading@11: /* skip a RTP/TCP interleaved packet */ yading@11: void ff_rtsp_skip_packet(AVFormatContext *s) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: int ret, len, len1; yading@11: uint8_t buf[1024]; yading@11: yading@11: ret = ffurl_read_complete(rt->rtsp_hd, buf, 3); yading@11: if (ret != 3) yading@11: return; yading@11: len = AV_RB16(buf + 1); yading@11: yading@11: av_dlog(s, "skipping RTP packet len=%d\n", len); yading@11: yading@11: /* skip payload */ yading@11: while (len > 0) { yading@11: len1 = len; yading@11: if (len1 > sizeof(buf)) yading@11: len1 = sizeof(buf); yading@11: ret = ffurl_read_complete(rt->rtsp_hd, buf, len1); yading@11: if (ret != len1) yading@11: return; yading@11: len -= len1; yading@11: } yading@11: } yading@11: yading@11: int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply, yading@11: unsigned char **content_ptr, yading@11: int return_on_interleaved_data, const char *method) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: char buf[4096], buf1[1024], *q; yading@11: unsigned char ch; yading@11: const char *p; yading@11: int ret, content_length, line_count = 0, request = 0; yading@11: unsigned char *content = NULL; yading@11: yading@11: start: yading@11: line_count = 0; yading@11: request = 0; yading@11: content = NULL; yading@11: memset(reply, 0, sizeof(*reply)); yading@11: yading@11: /* parse reply (XXX: use buffers) */ yading@11: rt->last_reply[0] = '\0'; yading@11: for (;;) { yading@11: q = buf; yading@11: for (;;) { yading@11: ret = ffurl_read_complete(rt->rtsp_hd, &ch, 1); yading@11: av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch); yading@11: if (ret != 1) yading@11: return AVERROR_EOF; yading@11: if (ch == '\n') yading@11: break; yading@11: if (ch == '$') { yading@11: /* XXX: only parse it if first char on line ? */ yading@11: if (return_on_interleaved_data) { yading@11: return 1; yading@11: } else yading@11: ff_rtsp_skip_packet(s); yading@11: } else if (ch != '\r') { yading@11: if ((q - buf) < sizeof(buf) - 1) yading@11: *q++ = ch; yading@11: } yading@11: } yading@11: *q = '\0'; yading@11: yading@11: av_dlog(s, "line='%s'\n", buf); yading@11: yading@11: /* test if last line */ yading@11: if (buf[0] == '\0') yading@11: break; yading@11: p = buf; yading@11: if (line_count == 0) { yading@11: /* get reply code */ yading@11: get_word(buf1, sizeof(buf1), &p); yading@11: if (!strncmp(buf1, "RTSP/", 5)) { yading@11: get_word(buf1, sizeof(buf1), &p); yading@11: reply->status_code = atoi(buf1); yading@11: av_strlcpy(reply->reason, p, sizeof(reply->reason)); yading@11: } else { yading@11: av_strlcpy(reply->reason, buf1, sizeof(reply->reason)); // method yading@11: get_word(buf1, sizeof(buf1), &p); // object yading@11: request = 1; yading@11: } yading@11: } else { yading@11: ff_rtsp_parse_line(reply, p, rt, method); yading@11: av_strlcat(rt->last_reply, p, sizeof(rt->last_reply)); yading@11: av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply)); yading@11: } yading@11: line_count++; yading@11: } yading@11: yading@11: if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0' && !request) yading@11: av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id)); yading@11: yading@11: content_length = reply->content_length; yading@11: if (content_length > 0) { yading@11: /* leave some room for a trailing '\0' (useful for simple parsing) */ yading@11: content = av_malloc(content_length + 1); yading@11: ffurl_read_complete(rt->rtsp_hd, content, content_length); yading@11: content[content_length] = '\0'; yading@11: } yading@11: if (content_ptr) yading@11: *content_ptr = content; yading@11: else yading@11: av_free(content); yading@11: yading@11: if (request) { yading@11: char buf[1024]; yading@11: char base64buf[AV_BASE64_SIZE(sizeof(buf))]; yading@11: const char* ptr = buf; yading@11: yading@11: if (!strcmp(reply->reason, "OPTIONS")) { yading@11: snprintf(buf, sizeof(buf), "RTSP/1.0 200 OK\r\n"); yading@11: if (reply->seq) yading@11: av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", reply->seq); yading@11: if (reply->session_id[0]) yading@11: av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", yading@11: reply->session_id); yading@11: } else { yading@11: snprintf(buf, sizeof(buf), "RTSP/1.0 501 Not Implemented\r\n"); yading@11: } yading@11: av_strlcat(buf, "\r\n", sizeof(buf)); yading@11: yading@11: if (rt->control_transport == RTSP_MODE_TUNNEL) { yading@11: av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf)); yading@11: ptr = base64buf; yading@11: } yading@11: ffurl_write(rt->rtsp_hd_out, ptr, strlen(ptr)); yading@11: yading@11: rt->last_cmd_time = av_gettime(); yading@11: /* Even if the request from the server had data, it is not the data yading@11: * that the caller wants or expects. The memory could also be leaked yading@11: * if the actual following reply has content data. */ yading@11: if (content_ptr) yading@11: av_freep(content_ptr); yading@11: /* If method is set, this is called from ff_rtsp_send_cmd, yading@11: * where a reply to exactly this request is awaited. For yading@11: * callers from within packet receiving, we just want to yading@11: * return to the caller and go back to receiving packets. */ yading@11: if (method) yading@11: goto start; yading@11: return 0; yading@11: } yading@11: yading@11: if (rt->seq != reply->seq) { yading@11: av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n", yading@11: rt->seq, reply->seq); yading@11: } yading@11: yading@11: /* EOS */ yading@11: if (reply->notice == 2101 /* End-of-Stream Reached */ || yading@11: reply->notice == 2104 /* Start-of-Stream Reached */ || yading@11: reply->notice == 2306 /* Continuous Feed Terminated */) { yading@11: rt->state = RTSP_STATE_IDLE; yading@11: } else if (reply->notice >= 4400 && reply->notice < 5500) { yading@11: return AVERROR(EIO); /* data or server error */ yading@11: } else if (reply->notice == 2401 /* Ticket Expired */ || yading@11: (reply->notice >= 5500 && reply->notice < 5600) /* end of term */ ) yading@11: return AVERROR(EPERM); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: /** yading@11: * Send a command to the RTSP server without waiting for the reply. yading@11: * yading@11: * @param s RTSP (de)muxer context yading@11: * @param method the method for the request yading@11: * @param url the target url for the request yading@11: * @param headers extra header lines to include in the request yading@11: * @param send_content if non-null, the data to send as request body content yading@11: * @param send_content_length the length of the send_content data, or 0 if yading@11: * send_content is null yading@11: * yading@11: * @return zero if success, nonzero otherwise yading@11: */ yading@11: static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s, yading@11: const char *method, const char *url, yading@11: const char *headers, yading@11: const unsigned char *send_content, yading@11: int send_content_length) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: char buf[4096], *out_buf; yading@11: char base64buf[AV_BASE64_SIZE(sizeof(buf))]; yading@11: yading@11: /* Add in RTSP headers */ yading@11: out_buf = buf; yading@11: rt->seq++; yading@11: snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url); yading@11: if (headers) yading@11: av_strlcat(buf, headers, sizeof(buf)); yading@11: av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq); yading@11: if (rt->session_id[0] != '\0' && (!headers || yading@11: !strstr(headers, "\nIf-Match:"))) { yading@11: av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id); yading@11: } yading@11: if (rt->auth[0]) { yading@11: char *str = ff_http_auth_create_response(&rt->auth_state, yading@11: rt->auth, url, method); yading@11: if (str) yading@11: av_strlcat(buf, str, sizeof(buf)); yading@11: av_free(str); yading@11: } yading@11: if (send_content_length > 0 && send_content) yading@11: av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length); yading@11: av_strlcat(buf, "\r\n", sizeof(buf)); yading@11: yading@11: /* base64 encode rtsp if tunneling */ yading@11: if (rt->control_transport == RTSP_MODE_TUNNEL) { yading@11: av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf)); yading@11: out_buf = base64buf; yading@11: } yading@11: yading@11: av_dlog(s, "Sending:\n%s--\n", buf); yading@11: yading@11: ffurl_write(rt->rtsp_hd_out, out_buf, strlen(out_buf)); yading@11: if (send_content_length > 0 && send_content) { yading@11: if (rt->control_transport == RTSP_MODE_TUNNEL) { yading@11: av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests " yading@11: "with content data not supported\n"); yading@11: return AVERROR_PATCHWELCOME; yading@11: } yading@11: ffurl_write(rt->rtsp_hd_out, send_content, send_content_length); yading@11: } yading@11: rt->last_cmd_time = av_gettime(); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method, yading@11: const char *url, const char *headers) yading@11: { yading@11: return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0); yading@11: } yading@11: yading@11: int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url, yading@11: const char *headers, RTSPMessageHeader *reply, yading@11: unsigned char **content_ptr) yading@11: { yading@11: return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply, yading@11: content_ptr, NULL, 0); yading@11: } yading@11: yading@11: int ff_rtsp_send_cmd_with_content(AVFormatContext *s, yading@11: const char *method, const char *url, yading@11: const char *header, yading@11: RTSPMessageHeader *reply, yading@11: unsigned char **content_ptr, yading@11: const unsigned char *send_content, yading@11: int send_content_length) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: HTTPAuthType cur_auth_type; yading@11: int ret, attempts = 0; yading@11: yading@11: retry: yading@11: cur_auth_type = rt->auth_state.auth_type; yading@11: if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header, yading@11: send_content, yading@11: send_content_length))) yading@11: return ret; yading@11: yading@11: if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0) yading@11: return ret; yading@11: attempts++; yading@11: yading@11: if (reply->status_code == 401 && yading@11: (cur_auth_type == HTTP_AUTH_NONE || rt->auth_state.stale) && yading@11: rt->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2) yading@11: goto retry; yading@11: yading@11: if (reply->status_code > 400){ yading@11: av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n", yading@11: method, yading@11: reply->status_code, yading@11: reply->reason); yading@11: av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply); yading@11: } yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port, yading@11: int lower_transport, const char *real_challenge) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: int rtx = 0, j, i, err, interleave = 0, port_off; yading@11: RTSPStream *rtsp_st; yading@11: RTSPMessageHeader reply1, *reply = &reply1; yading@11: char cmd[2048]; yading@11: const char *trans_pref; yading@11: yading@11: if (rt->transport == RTSP_TRANSPORT_RDT) yading@11: trans_pref = "x-pn-tng"; yading@11: else if (rt->transport == RTSP_TRANSPORT_RAW) yading@11: trans_pref = "RAW/RAW"; yading@11: else yading@11: trans_pref = "RTP/AVP"; yading@11: yading@11: /* default timeout: 1 minute */ yading@11: rt->timeout = 60; yading@11: yading@11: /* Choose a random starting offset within the first half of the yading@11: * port range, to allow for a number of ports to try even if the offset yading@11: * happens to be at the end of the random range. */ yading@11: port_off = av_get_random_seed() % ((rt->rtp_port_max - rt->rtp_port_min)/2); yading@11: /* even random offset */ yading@11: port_off -= port_off & 0x01; yading@11: yading@11: for (j = rt->rtp_port_min + port_off, i = 0; i < rt->nb_rtsp_streams; ++i) { yading@11: char transport[2048]; yading@11: yading@11: /* yading@11: * WMS serves all UDP data over a single connection, the RTX, which yading@11: * isn't necessarily the first in the SDP but has to be the first yading@11: * to be set up, else the second/third SETUP will fail with a 461. yading@11: */ yading@11: if (lower_transport == RTSP_LOWER_TRANSPORT_UDP && yading@11: rt->server_type == RTSP_SERVER_WMS) { yading@11: if (i == 0) { yading@11: /* rtx first */ yading@11: for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) { yading@11: int len = strlen(rt->rtsp_streams[rtx]->control_url); yading@11: if (len >= 4 && yading@11: !strcmp(rt->rtsp_streams[rtx]->control_url + len - 4, yading@11: "/rtx")) yading@11: break; yading@11: } yading@11: if (rtx == rt->nb_rtsp_streams) yading@11: return -1; /* no RTX found */ yading@11: rtsp_st = rt->rtsp_streams[rtx]; yading@11: } else yading@11: rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1]; yading@11: } else yading@11: rtsp_st = rt->rtsp_streams[i]; yading@11: yading@11: /* RTP/UDP */ yading@11: if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) { yading@11: char buf[256]; yading@11: yading@11: if (rt->server_type == RTSP_SERVER_WMS && i > 1) { yading@11: port = reply->transports[0].client_port_min; yading@11: goto have_port; yading@11: } yading@11: yading@11: /* first try in specified port range */ yading@11: while (j <= rt->rtp_port_max) { yading@11: ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1, yading@11: "?localport=%d", j); yading@11: /* we will use two ports per rtp stream (rtp and rtcp) */ yading@11: j += 2; yading@11: if (!ffurl_open(&rtsp_st->rtp_handle, buf, AVIO_FLAG_READ_WRITE, yading@11: &s->interrupt_callback, NULL)) yading@11: goto rtp_opened; yading@11: } yading@11: av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n"); yading@11: err = AVERROR(EIO); yading@11: goto fail; yading@11: yading@11: rtp_opened: yading@11: port = ff_rtp_get_local_rtp_port(rtsp_st->rtp_handle); yading@11: have_port: yading@11: snprintf(transport, sizeof(transport) - 1, yading@11: "%s/UDP;", trans_pref); yading@11: if (rt->server_type != RTSP_SERVER_REAL) yading@11: av_strlcat(transport, "unicast;", sizeof(transport)); yading@11: av_strlcatf(transport, sizeof(transport), yading@11: "client_port=%d", port); yading@11: if (rt->transport == RTSP_TRANSPORT_RTP && yading@11: !(rt->server_type == RTSP_SERVER_WMS && i > 0)) yading@11: av_strlcatf(transport, sizeof(transport), "-%d", port + 1); yading@11: } yading@11: yading@11: /* RTP/TCP */ yading@11: else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) { yading@11: /* For WMS streams, the application streams are only used for yading@11: * UDP. When trying to set it up for TCP streams, the server yading@11: * will return an error. Therefore, we skip those streams. */ yading@11: if (rt->server_type == RTSP_SERVER_WMS && yading@11: (rtsp_st->stream_index < 0 || yading@11: s->streams[rtsp_st->stream_index]->codec->codec_type == yading@11: AVMEDIA_TYPE_DATA)) yading@11: continue; yading@11: snprintf(transport, sizeof(transport) - 1, yading@11: "%s/TCP;", trans_pref); yading@11: if (rt->transport != RTSP_TRANSPORT_RDT) yading@11: av_strlcat(transport, "unicast;", sizeof(transport)); yading@11: av_strlcatf(transport, sizeof(transport), yading@11: "interleaved=%d-%d", yading@11: interleave, interleave + 1); yading@11: interleave += 2; yading@11: } yading@11: yading@11: else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) { yading@11: snprintf(transport, sizeof(transport) - 1, yading@11: "%s/UDP;multicast", trans_pref); yading@11: } yading@11: if (s->oformat) { yading@11: av_strlcat(transport, ";mode=record", sizeof(transport)); yading@11: } else if (rt->server_type == RTSP_SERVER_REAL || yading@11: rt->server_type == RTSP_SERVER_WMS) yading@11: av_strlcat(transport, ";mode=play", sizeof(transport)); yading@11: snprintf(cmd, sizeof(cmd), yading@11: "Transport: %s\r\n", yading@11: transport); yading@11: if (rt->accept_dynamic_rate) yading@11: av_strlcat(cmd, "x-Dynamic-Rate: 0\r\n", sizeof(cmd)); yading@11: if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) { yading@11: char real_res[41], real_csum[9]; yading@11: ff_rdt_calc_response_and_checksum(real_res, real_csum, yading@11: real_challenge); yading@11: av_strlcatf(cmd, sizeof(cmd), yading@11: "If-Match: %s\r\n" yading@11: "RealChallenge2: %s, sd=%s\r\n", yading@11: rt->session_id, real_res, real_csum); yading@11: } yading@11: ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL); yading@11: if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) { yading@11: err = 1; yading@11: goto fail; yading@11: } else if (reply->status_code != RTSP_STATUS_OK || yading@11: reply->nb_transports != 1) { yading@11: err = AVERROR_INVALIDDATA; yading@11: goto fail; yading@11: } yading@11: yading@11: /* XXX: same protocol for all streams is required */ yading@11: if (i > 0) { yading@11: if (reply->transports[0].lower_transport != rt->lower_transport || yading@11: reply->transports[0].transport != rt->transport) { yading@11: err = AVERROR_INVALIDDATA; yading@11: goto fail; yading@11: } yading@11: } else { yading@11: rt->lower_transport = reply->transports[0].lower_transport; yading@11: rt->transport = reply->transports[0].transport; yading@11: } yading@11: yading@11: /* Fail if the server responded with another lower transport mode yading@11: * than what we requested. */ yading@11: if (reply->transports[0].lower_transport != lower_transport) { yading@11: av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n"); yading@11: err = AVERROR_INVALIDDATA; yading@11: goto fail; yading@11: } yading@11: yading@11: switch(reply->transports[0].lower_transport) { yading@11: case RTSP_LOWER_TRANSPORT_TCP: yading@11: rtsp_st->interleaved_min = reply->transports[0].interleaved_min; yading@11: rtsp_st->interleaved_max = reply->transports[0].interleaved_max; yading@11: break; yading@11: yading@11: case RTSP_LOWER_TRANSPORT_UDP: { yading@11: char url[1024], options[30] = ""; yading@11: yading@11: if (rt->rtsp_flags & RTSP_FLAG_FILTER_SRC) yading@11: av_strlcpy(options, "?connect=1", sizeof(options)); yading@11: /* Use source address if specified */ yading@11: if (reply->transports[0].source[0]) { yading@11: ff_url_join(url, sizeof(url), "rtp", NULL, yading@11: reply->transports[0].source, yading@11: reply->transports[0].server_port_min, "%s", options); yading@11: } else { yading@11: ff_url_join(url, sizeof(url), "rtp", NULL, host, yading@11: reply->transports[0].server_port_min, "%s", options); yading@11: } yading@11: if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && yading@11: ff_rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) { yading@11: err = AVERROR_INVALIDDATA; yading@11: goto fail; yading@11: } yading@11: /* Try to initialize the connection state in a yading@11: * potential NAT router by sending dummy packets. yading@11: * RTP/RTCP dummy packets are used for RDT, too. yading@11: */ yading@11: if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat && yading@11: CONFIG_RTPDEC) yading@11: ff_rtp_send_punch_packets(rtsp_st->rtp_handle); yading@11: break; yading@11: } yading@11: case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: { yading@11: char url[1024], namebuf[50], optbuf[20] = ""; yading@11: struct sockaddr_storage addr; yading@11: int port, ttl; yading@11: yading@11: if (reply->transports[0].destination.ss_family) { yading@11: addr = reply->transports[0].destination; yading@11: port = reply->transports[0].port_min; yading@11: ttl = reply->transports[0].ttl; yading@11: } else { yading@11: addr = rtsp_st->sdp_ip; yading@11: port = rtsp_st->sdp_port; yading@11: ttl = rtsp_st->sdp_ttl; yading@11: } yading@11: if (ttl > 0) yading@11: snprintf(optbuf, sizeof(optbuf), "?ttl=%d", ttl); yading@11: getnameinfo((struct sockaddr*) &addr, sizeof(addr), yading@11: namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST); yading@11: ff_url_join(url, sizeof(url), "rtp", NULL, namebuf, yading@11: port, "%s", optbuf); yading@11: if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE, yading@11: &s->interrupt_callback, NULL) < 0) { yading@11: err = AVERROR_INVALIDDATA; yading@11: goto fail; yading@11: } yading@11: break; yading@11: } yading@11: } yading@11: yading@11: if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st))) yading@11: goto fail; yading@11: } yading@11: yading@11: if (rt->nb_rtsp_streams && reply->timeout > 0) yading@11: rt->timeout = reply->timeout; yading@11: yading@11: if (rt->server_type == RTSP_SERVER_REAL) yading@11: rt->need_subscription = 1; yading@11: yading@11: return 0; yading@11: yading@11: fail: yading@11: ff_rtsp_undo_setup(s); yading@11: return err; yading@11: } yading@11: yading@11: void ff_rtsp_close_connections(AVFormatContext *s) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: if (rt->rtsp_hd_out != rt->rtsp_hd) ffurl_close(rt->rtsp_hd_out); yading@11: ffurl_close(rt->rtsp_hd); yading@11: rt->rtsp_hd = rt->rtsp_hd_out = NULL; yading@11: } yading@11: yading@11: int ff_rtsp_connect(AVFormatContext *s) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128]; yading@11: int port, err, tcp_fd; yading@11: RTSPMessageHeader reply1 = {0}, *reply = &reply1; yading@11: int lower_transport_mask = 0; yading@11: char real_challenge[64] = ""; yading@11: struct sockaddr_storage peer; yading@11: socklen_t peer_len = sizeof(peer); yading@11: yading@11: if (rt->rtp_port_max < rt->rtp_port_min) { yading@11: av_log(s, AV_LOG_ERROR, "Invalid UDP port range, max port %d less " yading@11: "than min port %d\n", rt->rtp_port_max, yading@11: rt->rtp_port_min); yading@11: return AVERROR(EINVAL); yading@11: } yading@11: yading@11: if (!ff_network_init()) yading@11: return AVERROR(EIO); yading@11: yading@11: if (s->max_delay < 0) /* Not set by the caller */ yading@11: s->max_delay = s->iformat ? DEFAULT_REORDERING_DELAY : 0; yading@11: yading@11: rt->control_transport = RTSP_MODE_PLAIN; yading@11: if (rt->lower_transport_mask & (1 << RTSP_LOWER_TRANSPORT_HTTP)) { yading@11: rt->lower_transport_mask = 1 << RTSP_LOWER_TRANSPORT_TCP; yading@11: rt->control_transport = RTSP_MODE_TUNNEL; yading@11: } yading@11: /* Only pass through valid flags from here */ yading@11: rt->lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_NB) - 1; yading@11: yading@11: redirect: yading@11: lower_transport_mask = rt->lower_transport_mask; yading@11: /* extract hostname and port */ yading@11: av_url_split(NULL, 0, auth, sizeof(auth), yading@11: host, sizeof(host), &port, path, sizeof(path), s->filename); yading@11: if (*auth) { yading@11: av_strlcpy(rt->auth, auth, sizeof(rt->auth)); yading@11: } yading@11: if (port < 0) yading@11: port = RTSP_DEFAULT_PORT; yading@11: yading@11: if (!lower_transport_mask) yading@11: lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1; yading@11: yading@11: if (s->oformat) { yading@11: /* Only UDP or TCP - UDP multicast isn't supported. */ yading@11: lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) | yading@11: (1 << RTSP_LOWER_TRANSPORT_TCP); yading@11: if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) { yading@11: av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, " yading@11: "only UDP and TCP are supported for output.\n"); yading@11: err = AVERROR(EINVAL); yading@11: goto fail; yading@11: } yading@11: } yading@11: yading@11: /* Construct the URI used in request; this is similar to s->filename, yading@11: * but with authentication credentials removed and RTSP specific options yading@11: * stripped out. */ yading@11: ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL, yading@11: host, port, "%s", path); yading@11: yading@11: if (rt->control_transport == RTSP_MODE_TUNNEL) { yading@11: /* set up initial handshake for tunneling */ yading@11: char httpname[1024]; yading@11: char sessioncookie[17]; yading@11: char headers[1024]; yading@11: yading@11: ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path); yading@11: snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x", yading@11: av_get_random_seed(), av_get_random_seed()); yading@11: yading@11: /* GET requests */ yading@11: if (ffurl_alloc(&rt->rtsp_hd, httpname, AVIO_FLAG_READ, yading@11: &s->interrupt_callback) < 0) { yading@11: err = AVERROR(EIO); yading@11: goto fail; yading@11: } yading@11: yading@11: /* generate GET headers */ yading@11: snprintf(headers, sizeof(headers), yading@11: "x-sessioncookie: %s\r\n" yading@11: "Accept: application/x-rtsp-tunnelled\r\n" yading@11: "Pragma: no-cache\r\n" yading@11: "Cache-Control: no-cache\r\n", yading@11: sessioncookie); yading@11: av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0); yading@11: yading@11: /* complete the connection */ yading@11: if (ffurl_connect(rt->rtsp_hd, NULL)) { yading@11: err = AVERROR(EIO); yading@11: goto fail; yading@11: } yading@11: yading@11: /* POST requests */ yading@11: if (ffurl_alloc(&rt->rtsp_hd_out, httpname, AVIO_FLAG_WRITE, yading@11: &s->interrupt_callback) < 0 ) { yading@11: err = AVERROR(EIO); yading@11: goto fail; yading@11: } yading@11: yading@11: /* generate POST headers */ yading@11: snprintf(headers, sizeof(headers), yading@11: "x-sessioncookie: %s\r\n" yading@11: "Content-Type: application/x-rtsp-tunnelled\r\n" yading@11: "Pragma: no-cache\r\n" yading@11: "Cache-Control: no-cache\r\n" yading@11: "Content-Length: 32767\r\n" yading@11: "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n", yading@11: sessioncookie); yading@11: av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0); yading@11: av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0); yading@11: yading@11: /* Initialize the authentication state for the POST session. The HTTP yading@11: * protocol implementation doesn't properly handle multi-pass yading@11: * authentication for POST requests, since it would require one of yading@11: * the following: yading@11: * - implementing Expect: 100-continue, which many HTTP servers yading@11: * don't support anyway, even less the RTSP servers that do HTTP yading@11: * tunneling yading@11: * - sending the whole POST data until getting a 401 reply specifying yading@11: * what authentication method to use, then resending all that data yading@11: * - waiting for potential 401 replies directly after sending the yading@11: * POST header (waiting for some unspecified time) yading@11: * Therefore, we copy the full auth state, which works for both basic yading@11: * and digest. (For digest, we would have to synchronize the nonce yading@11: * count variable between the two sessions, if we'd do more requests yading@11: * with the original session, though.) yading@11: */ yading@11: ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd); yading@11: yading@11: /* complete the connection */ yading@11: if (ffurl_connect(rt->rtsp_hd_out, NULL)) { yading@11: err = AVERROR(EIO); yading@11: goto fail; yading@11: } yading@11: } else { yading@11: /* open the tcp connection */ yading@11: ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, yading@11: "?timeout=%d", rt->stimeout); yading@11: if (ffurl_open(&rt->rtsp_hd, tcpname, AVIO_FLAG_READ_WRITE, yading@11: &s->interrupt_callback, NULL) < 0) { yading@11: err = AVERROR(EIO); yading@11: goto fail; yading@11: } yading@11: rt->rtsp_hd_out = rt->rtsp_hd; yading@11: } yading@11: rt->seq = 0; yading@11: yading@11: tcp_fd = ffurl_get_file_handle(rt->rtsp_hd); yading@11: if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) { yading@11: getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host), yading@11: NULL, 0, NI_NUMERICHOST); yading@11: } yading@11: yading@11: /* request options supported by the server; this also detects server yading@11: * type */ yading@11: for (rt->server_type = RTSP_SERVER_RTP;;) { yading@11: cmd[0] = 0; yading@11: if (rt->server_type == RTSP_SERVER_REAL) yading@11: av_strlcat(cmd, yading@11: /* yading@11: * The following entries are required for proper yading@11: * streaming from a Realmedia server. They are yading@11: * interdependent in some way although we currently yading@11: * don't quite understand how. Values were copied yading@11: * from mplayer SVN r23589. yading@11: * ClientChallenge is a 16-byte ID in hex yading@11: * CompanyID is a 16-byte ID in base64 yading@11: */ yading@11: "ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n" yading@11: "PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n" yading@11: "CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n" yading@11: "GUID: 00000000-0000-0000-0000-000000000000\r\n", yading@11: sizeof(cmd)); yading@11: ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL); yading@11: if (reply->status_code != RTSP_STATUS_OK) { yading@11: err = AVERROR_INVALIDDATA; yading@11: goto fail; yading@11: } yading@11: yading@11: /* detect server type if not standard-compliant RTP */ yading@11: if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) { yading@11: rt->server_type = RTSP_SERVER_REAL; yading@11: continue; yading@11: } else if (!av_strncasecmp(reply->server, "WMServer/", 9)) { yading@11: rt->server_type = RTSP_SERVER_WMS; yading@11: } else if (rt->server_type == RTSP_SERVER_REAL) yading@11: strcpy(real_challenge, reply->real_challenge); yading@11: break; yading@11: } yading@11: yading@11: if (s->iformat && CONFIG_RTSP_DEMUXER) yading@11: err = ff_rtsp_setup_input_streams(s, reply); yading@11: else if (CONFIG_RTSP_MUXER) yading@11: err = ff_rtsp_setup_output_streams(s, host); yading@11: if (err) yading@11: goto fail; yading@11: yading@11: do { yading@11: int lower_transport = ff_log2_tab[lower_transport_mask & yading@11: ~(lower_transport_mask - 1)]; yading@11: yading@11: err = ff_rtsp_make_setup_request(s, host, port, lower_transport, yading@11: rt->server_type == RTSP_SERVER_REAL ? yading@11: real_challenge : NULL); yading@11: if (err < 0) yading@11: goto fail; yading@11: lower_transport_mask &= ~(1 << lower_transport); yading@11: if (lower_transport_mask == 0 && err == 1) { yading@11: err = AVERROR(EPROTONOSUPPORT); yading@11: goto fail; yading@11: } yading@11: } while (err); yading@11: yading@11: rt->lower_transport_mask = lower_transport_mask; yading@11: av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge)); yading@11: rt->state = RTSP_STATE_IDLE; yading@11: rt->seek_timestamp = 0; /* default is to start stream at position zero */ yading@11: return 0; yading@11: fail: yading@11: ff_rtsp_close_streams(s); yading@11: ff_rtsp_close_connections(s); yading@11: if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) { yading@11: av_strlcpy(s->filename, reply->location, sizeof(s->filename)); yading@11: av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n", yading@11: reply->status_code, yading@11: s->filename); yading@11: goto redirect; yading@11: } yading@11: ff_network_close(); yading@11: return err; yading@11: } yading@11: #endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */ yading@11: yading@11: #if CONFIG_RTPDEC yading@11: static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st, yading@11: uint8_t *buf, int buf_size, int64_t wait_end) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: RTSPStream *rtsp_st; yading@11: int n, i, ret, tcp_fd, timeout_cnt = 0; yading@11: int max_p = 0; yading@11: struct pollfd *p = rt->p; yading@11: int *fds = NULL, fdsnum, fdsidx; yading@11: yading@11: for (;;) { yading@11: if (ff_check_interrupt(&s->interrupt_callback)) yading@11: return AVERROR_EXIT; yading@11: if (wait_end && wait_end - av_gettime() < 0) yading@11: return AVERROR(EAGAIN); yading@11: max_p = 0; yading@11: if (rt->rtsp_hd) { yading@11: tcp_fd = ffurl_get_file_handle(rt->rtsp_hd); yading@11: p[max_p].fd = tcp_fd; yading@11: p[max_p++].events = POLLIN; yading@11: } else { yading@11: tcp_fd = -1; yading@11: } yading@11: for (i = 0; i < rt->nb_rtsp_streams; i++) { yading@11: rtsp_st = rt->rtsp_streams[i]; yading@11: if (rtsp_st->rtp_handle) { yading@11: if (ret = ffurl_get_multi_file_handle(rtsp_st->rtp_handle, yading@11: &fds, &fdsnum)) { yading@11: av_log(s, AV_LOG_ERROR, "Unable to recover rtp ports\n"); yading@11: return ret; yading@11: } yading@11: if (fdsnum != 2) { yading@11: av_log(s, AV_LOG_ERROR, yading@11: "Number of fds %d not supported\n", fdsnum); yading@11: return AVERROR_INVALIDDATA; yading@11: } yading@11: for (fdsidx = 0; fdsidx < fdsnum; fdsidx++) { yading@11: p[max_p].fd = fds[fdsidx]; yading@11: p[max_p++].events = POLLIN; yading@11: } yading@11: av_free(fds); yading@11: } yading@11: } yading@11: n = poll(p, max_p, POLL_TIMEOUT_MS); yading@11: if (n > 0) { yading@11: int j = 1 - (tcp_fd == -1); yading@11: timeout_cnt = 0; yading@11: for (i = 0; i < rt->nb_rtsp_streams; i++) { yading@11: rtsp_st = rt->rtsp_streams[i]; yading@11: if (rtsp_st->rtp_handle) { yading@11: if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) { yading@11: ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size); yading@11: if (ret > 0) { yading@11: *prtsp_st = rtsp_st; yading@11: return ret; yading@11: } yading@11: } yading@11: j+=2; yading@11: } yading@11: } yading@11: #if CONFIG_RTSP_DEMUXER yading@11: if (tcp_fd != -1 && p[0].revents & POLLIN) { yading@11: if (rt->rtsp_flags & RTSP_FLAG_LISTEN) { yading@11: if (rt->state == RTSP_STATE_STREAMING) { yading@11: if (!ff_rtsp_parse_streaming_commands(s)) yading@11: return AVERROR_EOF; yading@11: else yading@11: av_log(s, AV_LOG_WARNING, yading@11: "Unable to answer to TEARDOWN\n"); yading@11: } else yading@11: return 0; yading@11: } else { yading@11: RTSPMessageHeader reply; yading@11: ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL); yading@11: if (ret < 0) yading@11: return ret; yading@11: /* XXX: parse message */ yading@11: if (rt->state != RTSP_STATE_STREAMING) yading@11: return 0; yading@11: } yading@11: } yading@11: #endif yading@11: } else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) { yading@11: return AVERROR(ETIMEDOUT); yading@11: } else if (n < 0 && errno != EINTR) yading@11: return AVERROR(errno); yading@11: } yading@11: } yading@11: yading@11: static int pick_stream(AVFormatContext *s, RTSPStream **rtsp_st, yading@11: const uint8_t *buf, int len) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: int i; yading@11: if (len < 0) yading@11: return len; yading@11: if (rt->nb_rtsp_streams == 1) { yading@11: *rtsp_st = rt->rtsp_streams[0]; yading@11: return len; yading@11: } yading@11: if (len >= 8 && rt->transport == RTSP_TRANSPORT_RTP) { yading@11: if (RTP_PT_IS_RTCP(rt->recvbuf[1])) { yading@11: int no_ssrc = 0; yading@11: for (i = 0; i < rt->nb_rtsp_streams; i++) { yading@11: RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv; yading@11: if (!rtpctx) yading@11: continue; yading@11: if (rtpctx->ssrc == AV_RB32(&buf[4])) { yading@11: *rtsp_st = rt->rtsp_streams[i]; yading@11: return len; yading@11: } yading@11: if (!rtpctx->ssrc) yading@11: no_ssrc = 1; yading@11: } yading@11: if (no_ssrc) { yading@11: av_log(s, AV_LOG_WARNING, yading@11: "Unable to pick stream for packet - SSRC not known for " yading@11: "all streams\n"); yading@11: return AVERROR(EAGAIN); yading@11: } yading@11: } else { yading@11: for (i = 0; i < rt->nb_rtsp_streams; i++) { yading@11: if ((buf[1] & 0x7f) == rt->rtsp_streams[i]->sdp_payload_type) { yading@11: *rtsp_st = rt->rtsp_streams[i]; yading@11: return len; yading@11: } yading@11: } yading@11: } yading@11: } yading@11: av_log(s, AV_LOG_WARNING, "Unable to pick stream for packet\n"); yading@11: return AVERROR(EAGAIN); yading@11: } yading@11: yading@11: int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: int ret, len; yading@11: RTSPStream *rtsp_st, *first_queue_st = NULL; yading@11: int64_t wait_end = 0; yading@11: yading@11: if (rt->nb_byes == rt->nb_rtsp_streams) yading@11: return AVERROR_EOF; yading@11: yading@11: /* get next frames from the same RTP packet */ yading@11: if (rt->cur_transport_priv) { yading@11: if (rt->transport == RTSP_TRANSPORT_RDT) { yading@11: ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0); yading@11: } else if (rt->transport == RTSP_TRANSPORT_RTP) { yading@11: ret = ff_rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0); yading@11: } else if (rt->ts && CONFIG_RTPDEC) { yading@11: ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf + rt->recvbuf_pos, rt->recvbuf_len - rt->recvbuf_pos); yading@11: if (ret >= 0) { yading@11: rt->recvbuf_pos += ret; yading@11: ret = rt->recvbuf_pos < rt->recvbuf_len; yading@11: } yading@11: } else yading@11: ret = -1; yading@11: if (ret == 0) { yading@11: rt->cur_transport_priv = NULL; yading@11: return 0; yading@11: } else if (ret == 1) { yading@11: return 0; yading@11: } else yading@11: rt->cur_transport_priv = NULL; yading@11: } yading@11: yading@11: redo: yading@11: if (rt->transport == RTSP_TRANSPORT_RTP) { yading@11: int i; yading@11: int64_t first_queue_time = 0; yading@11: for (i = 0; i < rt->nb_rtsp_streams; i++) { yading@11: RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv; yading@11: int64_t queue_time; yading@11: if (!rtpctx) yading@11: continue; yading@11: queue_time = ff_rtp_queued_packet_time(rtpctx); yading@11: if (queue_time && (queue_time - first_queue_time < 0 || yading@11: !first_queue_time)) { yading@11: first_queue_time = queue_time; yading@11: first_queue_st = rt->rtsp_streams[i]; yading@11: } yading@11: } yading@11: if (first_queue_time) { yading@11: wait_end = first_queue_time + s->max_delay; yading@11: } else { yading@11: wait_end = 0; yading@11: first_queue_st = NULL; yading@11: } yading@11: } yading@11: yading@11: /* read next RTP packet */ yading@11: if (!rt->recvbuf) { yading@11: rt->recvbuf = av_malloc(RECVBUF_SIZE); yading@11: if (!rt->recvbuf) yading@11: return AVERROR(ENOMEM); yading@11: } yading@11: yading@11: switch(rt->lower_transport) { yading@11: default: yading@11: #if CONFIG_RTSP_DEMUXER yading@11: case RTSP_LOWER_TRANSPORT_TCP: yading@11: len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE); yading@11: break; yading@11: #endif yading@11: case RTSP_LOWER_TRANSPORT_UDP: yading@11: case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: yading@11: len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end); yading@11: if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP) yading@11: ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, rtsp_st->rtp_handle, NULL, len); yading@11: break; yading@11: case RTSP_LOWER_TRANSPORT_CUSTOM: yading@11: if (first_queue_st && rt->transport == RTSP_TRANSPORT_RTP && yading@11: wait_end && wait_end < av_gettime()) yading@11: len = AVERROR(EAGAIN); yading@11: else yading@11: len = ffio_read_partial(s->pb, rt->recvbuf, RECVBUF_SIZE); yading@11: len = pick_stream(s, &rtsp_st, rt->recvbuf, len); yading@11: if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP) yading@11: ff_rtp_check_and_send_back_rr(rtsp_st->transport_priv, NULL, s->pb, len); yading@11: break; yading@11: } yading@11: if (len == AVERROR(EAGAIN) && first_queue_st && yading@11: rt->transport == RTSP_TRANSPORT_RTP) { yading@11: rtsp_st = first_queue_st; yading@11: ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0); yading@11: goto end; yading@11: } yading@11: if (len < 0) yading@11: return len; yading@11: if (len == 0) yading@11: return AVERROR_EOF; yading@11: if (rt->transport == RTSP_TRANSPORT_RDT) { yading@11: ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len); yading@11: } else if (rt->transport == RTSP_TRANSPORT_RTP) { yading@11: ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len); yading@11: if (rtsp_st->feedback) { yading@11: AVIOContext *pb = NULL; yading@11: if (rt->lower_transport == RTSP_LOWER_TRANSPORT_CUSTOM) yading@11: pb = s->pb; yading@11: ff_rtp_send_rtcp_feedback(rtsp_st->transport_priv, rtsp_st->rtp_handle, pb); yading@11: } yading@11: if (ret < 0) { yading@11: /* Either bad packet, or a RTCP packet. Check if the yading@11: * first_rtcp_ntp_time field was initialized. */ yading@11: RTPDemuxContext *rtpctx = rtsp_st->transport_priv; yading@11: if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) { yading@11: /* first_rtcp_ntp_time has been initialized for this stream, yading@11: * copy the same value to all other uninitialized streams, yading@11: * in order to map their timestamp origin to the same ntp time yading@11: * as this one. */ yading@11: int i; yading@11: AVStream *st = NULL; yading@11: if (rtsp_st->stream_index >= 0) yading@11: st = s->streams[rtsp_st->stream_index]; yading@11: for (i = 0; i < rt->nb_rtsp_streams; i++) { yading@11: RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv; yading@11: AVStream *st2 = NULL; yading@11: if (rt->rtsp_streams[i]->stream_index >= 0) yading@11: st2 = s->streams[rt->rtsp_streams[i]->stream_index]; yading@11: if (rtpctx2 && st && st2 && yading@11: rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) { yading@11: rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time; yading@11: rtpctx2->rtcp_ts_offset = av_rescale_q( yading@11: rtpctx->rtcp_ts_offset, st->time_base, yading@11: st2->time_base); yading@11: } yading@11: } yading@11: } yading@11: if (ret == -RTCP_BYE) { yading@11: rt->nb_byes++; yading@11: yading@11: av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n", yading@11: rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams); yading@11: yading@11: if (rt->nb_byes == rt->nb_rtsp_streams) yading@11: return AVERROR_EOF; yading@11: } yading@11: } yading@11: } else if (rt->ts && CONFIG_RTPDEC) { yading@11: ret = ff_mpegts_parse_packet(rt->ts, pkt, rt->recvbuf, len); yading@11: if (ret >= 0) { yading@11: if (ret < len) { yading@11: rt->recvbuf_len = len; yading@11: rt->recvbuf_pos = ret; yading@11: rt->cur_transport_priv = rt->ts; yading@11: return 1; yading@11: } else { yading@11: ret = 0; yading@11: } yading@11: } yading@11: } else { yading@11: return AVERROR_INVALIDDATA; yading@11: } yading@11: end: yading@11: if (ret < 0) yading@11: goto redo; yading@11: if (ret == 1) yading@11: /* more packets may follow, so we save the RTP context */ yading@11: rt->cur_transport_priv = rtsp_st->transport_priv; yading@11: yading@11: return ret; yading@11: } yading@11: #endif /* CONFIG_RTPDEC */ yading@11: yading@11: #if CONFIG_SDP_DEMUXER yading@11: static int sdp_probe(AVProbeData *p1) yading@11: { yading@11: const char *p = p1->buf, *p_end = p1->buf + p1->buf_size; yading@11: yading@11: /* we look for a line beginning "c=IN IP" */ yading@11: while (p < p_end && *p != '\0') { yading@11: if (p + sizeof("c=IN IP") - 1 < p_end && yading@11: av_strstart(p, "c=IN IP", NULL)) yading@11: return AVPROBE_SCORE_MAX / 2; yading@11: yading@11: while (p < p_end - 1 && *p != '\n') p++; yading@11: if (++p >= p_end) yading@11: break; yading@11: if (*p == '\r') yading@11: p++; yading@11: } yading@11: return 0; yading@11: } yading@11: yading@11: static int sdp_read_header(AVFormatContext *s) yading@11: { yading@11: RTSPState *rt = s->priv_data; yading@11: RTSPStream *rtsp_st; yading@11: int size, i, err; yading@11: char *content; yading@11: char url[1024]; yading@11: yading@11: if (!ff_network_init()) yading@11: return AVERROR(EIO); yading@11: yading@11: if (s->max_delay < 0) /* Not set by the caller */ yading@11: s->max_delay = DEFAULT_REORDERING_DELAY; yading@11: if (rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO) yading@11: rt->lower_transport = RTSP_LOWER_TRANSPORT_CUSTOM; yading@11: yading@11: /* read the whole sdp file */ yading@11: /* XXX: better loading */ yading@11: content = av_malloc(SDP_MAX_SIZE); yading@11: size = avio_read(s->pb, content, SDP_MAX_SIZE - 1); yading@11: if (size <= 0) { yading@11: av_free(content); yading@11: return AVERROR_INVALIDDATA; yading@11: } yading@11: content[size] ='\0'; yading@11: yading@11: err = ff_sdp_parse(s, content); yading@11: av_free(content); yading@11: if (err) goto fail; yading@11: yading@11: /* open each RTP stream */ yading@11: for (i = 0; i < rt->nb_rtsp_streams; i++) { yading@11: char namebuf[50]; yading@11: rtsp_st = rt->rtsp_streams[i]; yading@11: yading@11: if (!(rt->rtsp_flags & RTSP_FLAG_CUSTOM_IO)) { yading@11: getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip), yading@11: namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST); yading@11: ff_url_join(url, sizeof(url), "rtp", NULL, yading@11: namebuf, rtsp_st->sdp_port, yading@11: "?localport=%d&ttl=%d&connect=%d", rtsp_st->sdp_port, yading@11: rtsp_st->sdp_ttl, yading@11: rt->rtsp_flags & RTSP_FLAG_FILTER_SRC ? 1 : 0); yading@11: if (ffurl_open(&rtsp_st->rtp_handle, url, AVIO_FLAG_READ_WRITE, yading@11: &s->interrupt_callback, NULL) < 0) { yading@11: err = AVERROR_INVALIDDATA; yading@11: goto fail; yading@11: } yading@11: } yading@11: if ((err = ff_rtsp_open_transport_ctx(s, rtsp_st))) yading@11: goto fail; yading@11: } yading@11: return 0; yading@11: fail: yading@11: ff_rtsp_close_streams(s); yading@11: ff_network_close(); yading@11: return err; yading@11: } yading@11: yading@11: static int sdp_read_close(AVFormatContext *s) yading@11: { yading@11: ff_rtsp_close_streams(s); yading@11: ff_network_close(); yading@11: return 0; yading@11: } yading@11: yading@11: static const AVClass sdp_demuxer_class = { yading@11: .class_name = "SDP demuxer", yading@11: .item_name = av_default_item_name, yading@11: .option = sdp_options, yading@11: .version = LIBAVUTIL_VERSION_INT, yading@11: }; yading@11: yading@11: AVInputFormat ff_sdp_demuxer = { yading@11: .name = "sdp", yading@11: .long_name = NULL_IF_CONFIG_SMALL("SDP"), yading@11: .priv_data_size = sizeof(RTSPState), yading@11: .read_probe = sdp_probe, yading@11: .read_header = sdp_read_header, yading@11: .read_packet = ff_rtsp_fetch_packet, yading@11: .read_close = sdp_read_close, yading@11: .priv_class = &sdp_demuxer_class, yading@11: }; yading@11: #endif /* CONFIG_SDP_DEMUXER */ yading@11: yading@11: #if CONFIG_RTP_DEMUXER yading@11: static int rtp_probe(AVProbeData *p) yading@11: { yading@11: if (av_strstart(p->filename, "rtp:", NULL)) yading@11: return AVPROBE_SCORE_MAX; yading@11: return 0; yading@11: } yading@11: yading@11: static int rtp_read_header(AVFormatContext *s) yading@11: { yading@11: uint8_t recvbuf[RTP_MAX_PACKET_LENGTH]; yading@11: char host[500], sdp[500]; yading@11: int ret, port; yading@11: URLContext* in = NULL; yading@11: int payload_type; yading@11: AVCodecContext codec = { 0 }; yading@11: struct sockaddr_storage addr; yading@11: AVIOContext pb; yading@11: socklen_t addrlen = sizeof(addr); yading@11: RTSPState *rt = s->priv_data; yading@11: yading@11: if (!ff_network_init()) yading@11: return AVERROR(EIO); yading@11: yading@11: ret = ffurl_open(&in, s->filename, AVIO_FLAG_READ, yading@11: &s->interrupt_callback, NULL); yading@11: if (ret) yading@11: goto fail; yading@11: yading@11: while (1) { yading@11: ret = ffurl_read(in, recvbuf, sizeof(recvbuf)); yading@11: if (ret == AVERROR(EAGAIN)) yading@11: continue; yading@11: if (ret < 0) yading@11: goto fail; yading@11: if (ret < 12) { yading@11: av_log(s, AV_LOG_WARNING, "Received too short packet\n"); yading@11: continue; yading@11: } yading@11: yading@11: if ((recvbuf[0] & 0xc0) != 0x80) { yading@11: av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet " yading@11: "received\n"); yading@11: continue; yading@11: } yading@11: yading@11: if (RTP_PT_IS_RTCP(recvbuf[1])) yading@11: continue; yading@11: yading@11: payload_type = recvbuf[1] & 0x7f; yading@11: break; yading@11: } yading@11: getsockname(ffurl_get_file_handle(in), (struct sockaddr*) &addr, &addrlen); yading@11: ffurl_close(in); yading@11: in = NULL; yading@11: yading@11: if (ff_rtp_get_codec_info(&codec, payload_type)) { yading@11: av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d " yading@11: "without an SDP file describing it\n", yading@11: payload_type); yading@11: goto fail; yading@11: } yading@11: if (codec.codec_type != AVMEDIA_TYPE_DATA) { yading@11: av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received " yading@11: "properly you need an SDP file " yading@11: "describing it\n"); yading@11: } yading@11: yading@11: av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port, yading@11: NULL, 0, s->filename); yading@11: yading@11: snprintf(sdp, sizeof(sdp), yading@11: "v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n", yading@11: addr.ss_family == AF_INET ? 4 : 6, host, yading@11: codec.codec_type == AVMEDIA_TYPE_DATA ? "application" : yading@11: codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio", yading@11: port, payload_type); yading@11: av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp); yading@11: yading@11: ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL); yading@11: s->pb = &pb; yading@11: yading@11: /* sdp_read_header initializes this again */ yading@11: ff_network_close(); yading@11: yading@11: rt->media_type_mask = (1 << (AVMEDIA_TYPE_DATA+1)) - 1; yading@11: yading@11: ret = sdp_read_header(s); yading@11: s->pb = NULL; yading@11: return ret; yading@11: yading@11: fail: yading@11: if (in) yading@11: ffurl_close(in); yading@11: ff_network_close(); yading@11: return ret; yading@11: } yading@11: yading@11: static const AVClass rtp_demuxer_class = { yading@11: .class_name = "RTP demuxer", yading@11: .item_name = av_default_item_name, yading@11: .option = rtp_options, yading@11: .version = LIBAVUTIL_VERSION_INT, yading@11: }; yading@11: yading@11: AVInputFormat ff_rtp_demuxer = { yading@11: .name = "rtp", yading@11: .long_name = NULL_IF_CONFIG_SMALL("RTP input"), yading@11: .priv_data_size = sizeof(RTSPState), yading@11: .read_probe = rtp_probe, yading@11: .read_header = rtp_read_header, yading@11: .read_packet = ff_rtsp_fetch_packet, yading@11: .read_close = sdp_read_close, yading@11: .flags = AVFMT_NOFILE, yading@11: .priv_class = &rtp_demuxer_class, yading@11: }; yading@11: #endif /* CONFIG_RTP_DEMUXER */