ffmpeg / libavformat / rtsp.c @ bc371aca
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/*
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* RTSP/SDP client
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* Copyright (c) 2002 Fabrice Bellard
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/base64.h" |
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#include "libavutil/avstring.h" |
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#include "libavutil/intreadwrite.h" |
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#include "libavutil/parseutils.h" |
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#include "libavutil/random_seed.h" |
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#include "avformat.h" |
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#include "avio_internal.h" |
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#include <sys/time.h> |
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#if HAVE_POLL_H
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#include <poll.h> |
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#endif
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#include <strings.h> |
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#include "internal.h" |
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#include "network.h" |
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#include "os_support.h" |
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#include "http.h" |
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#include "rtsp.h" |
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#include "rtpdec.h" |
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#include "rdt.h" |
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#include "rtpdec_formats.h" |
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#include "rtpenc_chain.h" |
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#include "url.h" |
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//#define DEBUG
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//#define DEBUG_RTP_TCP
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/* Timeout values for socket poll, in ms,
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* and read_packet(), in seconds */
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#define POLL_TIMEOUT_MS 100 |
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#define READ_PACKET_TIMEOUT_S 10 |
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#define MAX_TIMEOUTS READ_PACKET_TIMEOUT_S * 1000 / POLL_TIMEOUT_MS |
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#define SDP_MAX_SIZE 16384 |
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#define RECVBUF_SIZE 10 * RTP_MAX_PACKET_LENGTH |
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static void get_word_until_chars(char *buf, int buf_size, |
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const char *sep, const char **pp) |
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{ |
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const char *p; |
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char *q;
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p = *pp; |
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p += strspn(p, SPACE_CHARS); |
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q = buf; |
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while (!strchr(sep, *p) && *p != '\0') { |
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if ((q - buf) < buf_size - 1) |
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*q++ = *p; |
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p++; |
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} |
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if (buf_size > 0) |
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*q = '\0';
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*pp = p; |
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} |
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static void get_word_sep(char *buf, int buf_size, const char *sep, |
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const char **pp) |
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{ |
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if (**pp == '/') (*pp)++; |
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get_word_until_chars(buf, buf_size, sep, pp); |
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} |
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static void get_word(char *buf, int buf_size, const char **pp) |
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{ |
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get_word_until_chars(buf, buf_size, SPACE_CHARS, pp); |
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} |
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/** Parse a string p in the form of Range:npt=xx-xx, and determine the start
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* and end time.
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* Used for seeking in the rtp stream.
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*/
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static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end) |
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{ |
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char buf[256]; |
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p += strspn(p, SPACE_CHARS); |
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if (!av_stristart(p, "npt=", &p)) |
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return;
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*start = AV_NOPTS_VALUE; |
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*end = AV_NOPTS_VALUE; |
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get_word_sep(buf, sizeof(buf), "-", &p); |
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av_parse_time(start, buf, 1);
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if (*p == '-') { |
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p++; |
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get_word_sep(buf, sizeof(buf), "-", &p); |
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av_parse_time(end, buf, 1);
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} |
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// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
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// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
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} |
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static int get_sockaddr(const char *buf, struct sockaddr_storage *sock) |
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{ |
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struct addrinfo hints, *ai = NULL; |
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memset(&hints, 0, sizeof(hints)); |
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hints.ai_flags = AI_NUMERICHOST; |
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if (getaddrinfo(buf, NULL, &hints, &ai)) |
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return -1; |
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memcpy(sock, ai->ai_addr, FFMIN(sizeof(*sock), ai->ai_addrlen));
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freeaddrinfo(ai); |
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return 0; |
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} |
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#if CONFIG_RTPDEC
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static void init_rtp_handler(RTPDynamicProtocolHandler *handler, |
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RTSPStream *rtsp_st, AVCodecContext *codec) |
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{ |
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if (!handler)
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return;
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codec->codec_id = handler->codec_id; |
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rtsp_st->dynamic_handler = handler; |
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if (handler->open)
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rtsp_st->dynamic_protocol_context = handler->open(); |
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} |
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/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other params>] */
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static int sdp_parse_rtpmap(AVFormatContext *s, |
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AVStream *st, RTSPStream *rtsp_st, |
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int payload_type, const char *p) |
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{ |
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AVCodecContext *codec = st->codec; |
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char buf[256]; |
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int i;
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AVCodec *c; |
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const char *c_name; |
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/* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
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* see if we can handle this kind of payload.
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* The space should normally not be there but some Real streams or
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* particular servers ("RealServer Version 6.1.3.970", see issue 1658)
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* have a trailing space. */
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get_word_sep(buf, sizeof(buf), "/ ", &p); |
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if (payload_type >= RTP_PT_PRIVATE) {
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RTPDynamicProtocolHandler *handler = |
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ff_rtp_handler_find_by_name(buf, codec->codec_type); |
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init_rtp_handler(handler, rtsp_st, codec); |
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/* If no dynamic handler was found, check with the list of standard
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* allocated types, if such a stream for some reason happens to
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* use a private payload type. This isn't handled in rtpdec.c, since
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* the format name from the rtpmap line never is passed into rtpdec. */
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if (!rtsp_st->dynamic_handler)
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codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type); |
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} else {
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/* We are in a standard case
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* (from http://www.iana.org/assignments/rtp-parameters). */
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/* search into AVRtpPayloadTypes[] */
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codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type); |
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} |
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c = avcodec_find_decoder(codec->codec_id); |
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if (c && c->name)
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c_name = c->name; |
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else
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c_name = "(null)";
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get_word_sep(buf, sizeof(buf), "/", &p); |
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i = atoi(buf); |
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switch (codec->codec_type) {
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case AVMEDIA_TYPE_AUDIO:
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av_log(s, AV_LOG_DEBUG, "audio codec set to: %s\n", c_name);
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codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE; |
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codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS; |
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if (i > 0) { |
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codec->sample_rate = i; |
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av_set_pts_info(st, 32, 1, codec->sample_rate); |
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get_word_sep(buf, sizeof(buf), "/", &p); |
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i = atoi(buf); |
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if (i > 0) |
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codec->channels = i; |
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// TODO: there is a bug here; if it is a mono stream, and
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// less than 22000Hz, faad upconverts to stereo and twice
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// the frequency. No problem, but the sample rate is being
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// set here by the sdp line. Patch on its way. (rdm)
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} |
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av_log(s, AV_LOG_DEBUG, "audio samplerate set to: %i\n",
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codec->sample_rate); |
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av_log(s, AV_LOG_DEBUG, "audio channels set to: %i\n",
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codec->channels); |
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break;
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case AVMEDIA_TYPE_VIDEO:
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av_log(s, AV_LOG_DEBUG, "video codec set to: %s\n", c_name);
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if (i > 0) |
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av_set_pts_info(st, 32, 1, i); |
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break;
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default:
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break;
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} |
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return 0; |
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} |
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/* parse the attribute line from the fmtp a line of an sdp response. This
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* is broken out as a function because it is used in rtp_h264.c, which is
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* forthcoming. */
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int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, |
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char *value, int value_size) |
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{ |
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*p += strspn(*p, SPACE_CHARS); |
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if (**p) {
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get_word_sep(attr, attr_size, "=", p);
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if (**p == '=') |
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(*p)++; |
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get_word_sep(value, value_size, ";", p);
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if (**p == ';') |
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(*p)++; |
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return 1; |
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} |
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return 0; |
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} |
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typedef struct SDPParseState { |
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/* SDP only */
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struct sockaddr_storage default_ip;
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int default_ttl;
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int skip_media; ///< set if an unknown m= line occurs |
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} SDPParseState; |
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static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1, |
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int letter, const char *buf) |
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{ |
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RTSPState *rt = s->priv_data; |
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char buf1[64], st_type[64]; |
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const char *p; |
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enum AVMediaType codec_type;
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int payload_type, i;
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AVStream *st; |
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RTSPStream *rtsp_st; |
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struct sockaddr_storage sdp_ip;
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int ttl;
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av_dlog(s, "sdp: %c='%s'\n", letter, buf);
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p = buf; |
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if (s1->skip_media && letter != 'm') |
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return;
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switch (letter) {
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case 'c': |
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get_word(buf1, sizeof(buf1), &p);
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if (strcmp(buf1, "IN") != 0) |
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return;
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get_word(buf1, sizeof(buf1), &p);
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if (strcmp(buf1, "IP4") && strcmp(buf1, "IP6")) |
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return;
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get_word_sep(buf1, sizeof(buf1), "/", &p); |
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if (get_sockaddr(buf1, &sdp_ip))
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return;
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ttl = 16;
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if (*p == '/') { |
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p++; |
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get_word_sep(buf1, sizeof(buf1), "/", &p); |
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ttl = atoi(buf1); |
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} |
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if (s->nb_streams == 0) { |
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s1->default_ip = sdp_ip; |
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s1->default_ttl = ttl; |
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} else {
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rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
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rtsp_st->sdp_ip = sdp_ip; |
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rtsp_st->sdp_ttl = ttl; |
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} |
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break;
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case 's': |
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av_metadata_set2(&s->metadata, "title", p, 0); |
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break;
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case 'i': |
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if (s->nb_streams == 0) { |
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av_metadata_set2(&s->metadata, "comment", p, 0); |
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break;
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} |
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break;
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case 'm': |
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/* new stream */
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s1->skip_media = 0;
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get_word(st_type, sizeof(st_type), &p);
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if (!strcmp(st_type, "audio")) { |
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codec_type = AVMEDIA_TYPE_AUDIO; |
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} else if (!strcmp(st_type, "video")) { |
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codec_type = AVMEDIA_TYPE_VIDEO; |
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} else if (!strcmp(st_type, "application")) { |
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codec_type = AVMEDIA_TYPE_DATA; |
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} else {
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s1->skip_media = 1;
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return;
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} |
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rtsp_st = av_mallocz(sizeof(RTSPStream));
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if (!rtsp_st)
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return;
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rtsp_st->stream_index = -1;
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dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st); |
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rtsp_st->sdp_ip = s1->default_ip; |
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rtsp_st->sdp_ttl = s1->default_ttl; |
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get_word(buf1, sizeof(buf1), &p); /* port */ |
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rtsp_st->sdp_port = atoi(buf1); |
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get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */ |
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/* XXX: handle list of formats */
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get_word(buf1, sizeof(buf1), &p); /* format list */ |
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rtsp_st->sdp_payload_type = atoi(buf1); |
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if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) { |
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/* no corresponding stream */
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} else {
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st = av_new_stream(s, rt->nb_rtsp_streams - 1);
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if (!st)
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return;
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rtsp_st->stream_index = st->index; |
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st->codec->codec_type = codec_type; |
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if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
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RTPDynamicProtocolHandler *handler; |
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/* if standard payload type, we can find the codec right now */
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ff_rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type); |
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if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
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st->codec->sample_rate > 0)
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av_set_pts_info(st, 32, 1, st->codec->sample_rate); |
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/* Even static payload types may need a custom depacketizer */
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handler = ff_rtp_handler_find_by_id( |
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rtsp_st->sdp_payload_type, st->codec->codec_type); |
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init_rtp_handler(handler, rtsp_st, st->codec); |
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} |
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} |
346 |
/* put a default control url */
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av_strlcpy(rtsp_st->control_url, rt->control_uri, |
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sizeof(rtsp_st->control_url));
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break;
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case 'a': |
351 |
if (av_strstart(p, "control:", &p)) { |
352 |
if (s->nb_streams == 0) { |
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if (!strncmp(p, "rtsp://", 7)) |
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av_strlcpy(rt->control_uri, p, |
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sizeof(rt->control_uri));
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} else {
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char proto[32]; |
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/* get the control url */
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rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
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|
361 |
/* XXX: may need to add full url resolution */
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av_url_split(proto, sizeof(proto), NULL, 0, NULL, 0, |
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NULL, NULL, 0, p); |
364 |
if (proto[0] == '\0') { |
365 |
/* relative control URL */
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if (rtsp_st->control_url[strlen(rtsp_st->control_url)-1]!='/') |
367 |
av_strlcat(rtsp_st->control_url, "/",
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sizeof(rtsp_st->control_url));
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av_strlcat(rtsp_st->control_url, p, |
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sizeof(rtsp_st->control_url));
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} else
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av_strlcpy(rtsp_st->control_url, p, |
373 |
sizeof(rtsp_st->control_url));
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} |
375 |
} else if (av_strstart(p, "rtpmap:", &p) && s->nb_streams > 0) { |
376 |
/* NOTE: rtpmap is only supported AFTER the 'm=' tag */
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get_word(buf1, sizeof(buf1), &p);
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payload_type = atoi(buf1); |
379 |
st = s->streams[s->nb_streams - 1];
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380 |
rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
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sdp_parse_rtpmap(s, st, rtsp_st, payload_type, p); |
382 |
} else if (av_strstart(p, "fmtp:", &p) || |
383 |
av_strstart(p, "framesize:", &p)) {
|
384 |
/* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */
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// let dynamic protocol handlers have a stab at the line.
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get_word(buf1, sizeof(buf1), &p);
|
387 |
payload_type = atoi(buf1); |
388 |
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
389 |
rtsp_st = rt->rtsp_streams[i]; |
390 |
if (rtsp_st->sdp_payload_type == payload_type &&
|
391 |
rtsp_st->dynamic_handler && |
392 |
rtsp_st->dynamic_handler->parse_sdp_a_line) |
393 |
rtsp_st->dynamic_handler->parse_sdp_a_line(s, i, |
394 |
rtsp_st->dynamic_protocol_context, buf); |
395 |
} |
396 |
} else if (av_strstart(p, "range:", &p)) { |
397 |
int64_t start, end; |
398 |
|
399 |
// this is so that seeking on a streamed file can work.
|
400 |
rtsp_parse_range_npt(p, &start, &end); |
401 |
s->start_time = start; |
402 |
/* AV_NOPTS_VALUE means live broadcast (and can't seek) */
|
403 |
s->duration = (end == AV_NOPTS_VALUE) ? |
404 |
AV_NOPTS_VALUE : end - start; |
405 |
} else if (av_strstart(p, "IsRealDataType:integer;",&p)) { |
406 |
if (atoi(p) == 1) |
407 |
rt->transport = RTSP_TRANSPORT_RDT; |
408 |
} else if (av_strstart(p, "SampleRate:integer;", &p) && |
409 |
s->nb_streams > 0) {
|
410 |
st = s->streams[s->nb_streams - 1];
|
411 |
st->codec->sample_rate = atoi(p); |
412 |
} else {
|
413 |
if (rt->server_type == RTSP_SERVER_WMS)
|
414 |
ff_wms_parse_sdp_a_line(s, p); |
415 |
if (s->nb_streams > 0) { |
416 |
if (rt->server_type == RTSP_SERVER_REAL)
|
417 |
ff_real_parse_sdp_a_line(s, s->nb_streams - 1, p);
|
418 |
|
419 |
rtsp_st = rt->rtsp_streams[rt->nb_rtsp_streams - 1];
|
420 |
if (rtsp_st->dynamic_handler &&
|
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rtsp_st->dynamic_handler->parse_sdp_a_line) |
422 |
rtsp_st->dynamic_handler->parse_sdp_a_line(s, |
423 |
s->nb_streams - 1,
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424 |
rtsp_st->dynamic_protocol_context, buf); |
425 |
} |
426 |
} |
427 |
break;
|
428 |
} |
429 |
} |
430 |
|
431 |
/**
|
432 |
* Parse the sdp description and allocate the rtp streams and the
|
433 |
* pollfd array used for udp ones.
|
434 |
*/
|
435 |
|
436 |
int ff_sdp_parse(AVFormatContext *s, const char *content) |
437 |
{ |
438 |
RTSPState *rt = s->priv_data; |
439 |
const char *p; |
440 |
int letter;
|
441 |
/* Some SDP lines, particularly for Realmedia or ASF RTSP streams,
|
442 |
* contain long SDP lines containing complete ASF Headers (several
|
443 |
* kB) or arrays of MDPR (RM stream descriptor) headers plus
|
444 |
* "rulebooks" describing their properties. Therefore, the SDP line
|
445 |
* buffer is large.
|
446 |
*
|
447 |
* The Vorbis FMTP line can be up to 16KB - see xiph_parse_sdp_line
|
448 |
* in rtpdec_xiph.c. */
|
449 |
char buf[16384], *q; |
450 |
SDPParseState sdp_parse_state, *s1 = &sdp_parse_state; |
451 |
|
452 |
memset(s1, 0, sizeof(SDPParseState)); |
453 |
p = content; |
454 |
for (;;) {
|
455 |
p += strspn(p, SPACE_CHARS); |
456 |
letter = *p; |
457 |
if (letter == '\0') |
458 |
break;
|
459 |
p++; |
460 |
if (*p != '=') |
461 |
goto next_line;
|
462 |
p++; |
463 |
/* get the content */
|
464 |
q = buf; |
465 |
while (*p != '\n' && *p != '\r' && *p != '\0') { |
466 |
if ((q - buf) < sizeof(buf) - 1) |
467 |
*q++ = *p; |
468 |
p++; |
469 |
} |
470 |
*q = '\0';
|
471 |
sdp_parse_line(s, s1, letter, buf); |
472 |
next_line:
|
473 |
while (*p != '\n' && *p != '\0') |
474 |
p++; |
475 |
if (*p == '\n') |
476 |
p++; |
477 |
} |
478 |
rt->p = av_malloc(sizeof(struct pollfd)*2*(rt->nb_rtsp_streams+1)); |
479 |
if (!rt->p) return AVERROR(ENOMEM); |
480 |
return 0; |
481 |
} |
482 |
#endif /* CONFIG_RTPDEC */ |
483 |
|
484 |
void ff_rtsp_undo_setup(AVFormatContext *s)
|
485 |
{ |
486 |
RTSPState *rt = s->priv_data; |
487 |
int i;
|
488 |
|
489 |
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
490 |
RTSPStream *rtsp_st = rt->rtsp_streams[i]; |
491 |
if (!rtsp_st)
|
492 |
continue;
|
493 |
if (rtsp_st->transport_priv) {
|
494 |
if (s->oformat) {
|
495 |
AVFormatContext *rtpctx = rtsp_st->transport_priv; |
496 |
av_write_trailer(rtpctx); |
497 |
if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
|
498 |
uint8_t *ptr; |
499 |
avio_close_dyn_buf(rtpctx->pb, &ptr); |
500 |
av_free(ptr); |
501 |
} else {
|
502 |
avio_close(rtpctx->pb); |
503 |
} |
504 |
avformat_free_context(rtpctx); |
505 |
} else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) |
506 |
ff_rdt_parse_close(rtsp_st->transport_priv); |
507 |
else if (CONFIG_RTPDEC) |
508 |
rtp_parse_close(rtsp_st->transport_priv); |
509 |
} |
510 |
rtsp_st->transport_priv = NULL;
|
511 |
if (rtsp_st->rtp_handle)
|
512 |
url_close(rtsp_st->rtp_handle); |
513 |
rtsp_st->rtp_handle = NULL;
|
514 |
} |
515 |
} |
516 |
|
517 |
/* close and free RTSP streams */
|
518 |
void ff_rtsp_close_streams(AVFormatContext *s)
|
519 |
{ |
520 |
RTSPState *rt = s->priv_data; |
521 |
int i;
|
522 |
RTSPStream *rtsp_st; |
523 |
|
524 |
ff_rtsp_undo_setup(s); |
525 |
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
526 |
rtsp_st = rt->rtsp_streams[i]; |
527 |
if (rtsp_st) {
|
528 |
if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
|
529 |
rtsp_st->dynamic_handler->close( |
530 |
rtsp_st->dynamic_protocol_context); |
531 |
av_free(rtsp_st); |
532 |
} |
533 |
} |
534 |
av_free(rt->rtsp_streams); |
535 |
if (rt->asf_ctx) {
|
536 |
av_close_input_stream (rt->asf_ctx); |
537 |
rt->asf_ctx = NULL;
|
538 |
} |
539 |
av_free(rt->p); |
540 |
av_free(rt->recvbuf); |
541 |
} |
542 |
|
543 |
static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st) |
544 |
{ |
545 |
RTSPState *rt = s->priv_data; |
546 |
AVStream *st = NULL;
|
547 |
|
548 |
/* open the RTP context */
|
549 |
if (rtsp_st->stream_index >= 0) |
550 |
st = s->streams[rtsp_st->stream_index]; |
551 |
if (!st)
|
552 |
s->ctx_flags |= AVFMTCTX_NOHEADER; |
553 |
|
554 |
if (s->oformat && CONFIG_RTSP_MUXER) {
|
555 |
rtsp_st->transport_priv = ff_rtp_chain_mux_open(s, st, |
556 |
rtsp_st->rtp_handle, |
557 |
RTSP_TCP_MAX_PACKET_SIZE); |
558 |
/* Ownership of rtp_handle is passed to the rtp mux context */
|
559 |
rtsp_st->rtp_handle = NULL;
|
560 |
} else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) |
561 |
rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index, |
562 |
rtsp_st->dynamic_protocol_context, |
563 |
rtsp_st->dynamic_handler); |
564 |
else if (CONFIG_RTPDEC) |
565 |
rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle, |
566 |
rtsp_st->sdp_payload_type, |
567 |
(rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP || !s->max_delay) |
568 |
? 0 : RTP_REORDER_QUEUE_DEFAULT_SIZE);
|
569 |
|
570 |
if (!rtsp_st->transport_priv) {
|
571 |
return AVERROR(ENOMEM);
|
572 |
} else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) { |
573 |
if (rtsp_st->dynamic_handler) {
|
574 |
rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv, |
575 |
rtsp_st->dynamic_protocol_context, |
576 |
rtsp_st->dynamic_handler); |
577 |
} |
578 |
} |
579 |
|
580 |
return 0; |
581 |
} |
582 |
|
583 |
#if CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER
|
584 |
static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp) |
585 |
{ |
586 |
const char *p; |
587 |
int v;
|
588 |
|
589 |
p = *pp; |
590 |
p += strspn(p, SPACE_CHARS); |
591 |
v = strtol(p, (char **)&p, 10); |
592 |
if (*p == '-') { |
593 |
p++; |
594 |
*min_ptr = v; |
595 |
v = strtol(p, (char **)&p, 10); |
596 |
*max_ptr = v; |
597 |
} else {
|
598 |
*min_ptr = v; |
599 |
*max_ptr = v; |
600 |
} |
601 |
*pp = p; |
602 |
} |
603 |
|
604 |
/* XXX: only one transport specification is parsed */
|
605 |
static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p) |
606 |
{ |
607 |
char transport_protocol[16]; |
608 |
char profile[16]; |
609 |
char lower_transport[16]; |
610 |
char parameter[16]; |
611 |
RTSPTransportField *th; |
612 |
char buf[256]; |
613 |
|
614 |
reply->nb_transports = 0;
|
615 |
|
616 |
for (;;) {
|
617 |
p += strspn(p, SPACE_CHARS); |
618 |
if (*p == '\0') |
619 |
break;
|
620 |
|
621 |
th = &reply->transports[reply->nb_transports]; |
622 |
|
623 |
get_word_sep(transport_protocol, sizeof(transport_protocol),
|
624 |
"/", &p);
|
625 |
if (!strcasecmp (transport_protocol, "rtp")) { |
626 |
get_word_sep(profile, sizeof(profile), "/;,", &p); |
627 |
lower_transport[0] = '\0'; |
628 |
/* rtp/avp/<protocol> */
|
629 |
if (*p == '/') { |
630 |
get_word_sep(lower_transport, sizeof(lower_transport),
|
631 |
";,", &p);
|
632 |
} |
633 |
th->transport = RTSP_TRANSPORT_RTP; |
634 |
} else if (!strcasecmp (transport_protocol, "x-pn-tng") || |
635 |
!strcasecmp (transport_protocol, "x-real-rdt")) {
|
636 |
/* x-pn-tng/<protocol> */
|
637 |
get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p); |
638 |
profile[0] = '\0'; |
639 |
th->transport = RTSP_TRANSPORT_RDT; |
640 |
} |
641 |
if (!strcasecmp(lower_transport, "TCP")) |
642 |
th->lower_transport = RTSP_LOWER_TRANSPORT_TCP; |
643 |
else
|
644 |
th->lower_transport = RTSP_LOWER_TRANSPORT_UDP; |
645 |
|
646 |
if (*p == ';') |
647 |
p++; |
648 |
/* get each parameter */
|
649 |
while (*p != '\0' && *p != ',') { |
650 |
get_word_sep(parameter, sizeof(parameter), "=;,", &p); |
651 |
if (!strcmp(parameter, "port")) { |
652 |
if (*p == '=') { |
653 |
p++; |
654 |
rtsp_parse_range(&th->port_min, &th->port_max, &p); |
655 |
} |
656 |
} else if (!strcmp(parameter, "client_port")) { |
657 |
if (*p == '=') { |
658 |
p++; |
659 |
rtsp_parse_range(&th->client_port_min, |
660 |
&th->client_port_max, &p); |
661 |
} |
662 |
} else if (!strcmp(parameter, "server_port")) { |
663 |
if (*p == '=') { |
664 |
p++; |
665 |
rtsp_parse_range(&th->server_port_min, |
666 |
&th->server_port_max, &p); |
667 |
} |
668 |
} else if (!strcmp(parameter, "interleaved")) { |
669 |
if (*p == '=') { |
670 |
p++; |
671 |
rtsp_parse_range(&th->interleaved_min, |
672 |
&th->interleaved_max, &p); |
673 |
} |
674 |
} else if (!strcmp(parameter, "multicast")) { |
675 |
if (th->lower_transport == RTSP_LOWER_TRANSPORT_UDP)
|
676 |
th->lower_transport = RTSP_LOWER_TRANSPORT_UDP_MULTICAST; |
677 |
} else if (!strcmp(parameter, "ttl")) { |
678 |
if (*p == '=') { |
679 |
p++; |
680 |
th->ttl = strtol(p, (char **)&p, 10); |
681 |
} |
682 |
} else if (!strcmp(parameter, "destination")) { |
683 |
if (*p == '=') { |
684 |
p++; |
685 |
get_word_sep(buf, sizeof(buf), ";,", &p); |
686 |
get_sockaddr(buf, &th->destination); |
687 |
} |
688 |
} else if (!strcmp(parameter, "source")) { |
689 |
if (*p == '=') { |
690 |
p++; |
691 |
get_word_sep(buf, sizeof(buf), ";,", &p); |
692 |
av_strlcpy(th->source, buf, sizeof(th->source));
|
693 |
} |
694 |
} |
695 |
|
696 |
while (*p != ';' && *p != '\0' && *p != ',') |
697 |
p++; |
698 |
if (*p == ';') |
699 |
p++; |
700 |
} |
701 |
if (*p == ',') |
702 |
p++; |
703 |
|
704 |
reply->nb_transports++; |
705 |
} |
706 |
} |
707 |
|
708 |
static void handle_rtp_info(RTSPState *rt, const char *url, |
709 |
uint32_t seq, uint32_t rtptime) |
710 |
{ |
711 |
int i;
|
712 |
if (!rtptime || !url[0]) |
713 |
return;
|
714 |
if (rt->transport != RTSP_TRANSPORT_RTP)
|
715 |
return;
|
716 |
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
717 |
RTSPStream *rtsp_st = rt->rtsp_streams[i]; |
718 |
RTPDemuxContext *rtpctx = rtsp_st->transport_priv; |
719 |
if (!rtpctx)
|
720 |
continue;
|
721 |
if (!strcmp(rtsp_st->control_url, url)) {
|
722 |
rtpctx->base_timestamp = rtptime; |
723 |
break;
|
724 |
} |
725 |
} |
726 |
} |
727 |
|
728 |
static void rtsp_parse_rtp_info(RTSPState *rt, const char *p) |
729 |
{ |
730 |
int read = 0; |
731 |
char key[20], value[1024], url[1024] = ""; |
732 |
uint32_t seq = 0, rtptime = 0; |
733 |
|
734 |
for (;;) {
|
735 |
p += strspn(p, SPACE_CHARS); |
736 |
if (!*p)
|
737 |
break;
|
738 |
get_word_sep(key, sizeof(key), "=", &p); |
739 |
if (*p != '=') |
740 |
break;
|
741 |
p++; |
742 |
get_word_sep(value, sizeof(value), ";, ", &p); |
743 |
read++; |
744 |
if (!strcmp(key, "url")) |
745 |
av_strlcpy(url, value, sizeof(url));
|
746 |
else if (!strcmp(key, "seq")) |
747 |
seq = strtol(value, NULL, 10); |
748 |
else if (!strcmp(key, "rtptime")) |
749 |
rtptime = strtol(value, NULL, 10); |
750 |
if (*p == ',') { |
751 |
handle_rtp_info(rt, url, seq, rtptime); |
752 |
url[0] = '\0'; |
753 |
seq = rtptime = 0;
|
754 |
read = 0;
|
755 |
} |
756 |
if (*p)
|
757 |
p++; |
758 |
} |
759 |
if (read > 0) |
760 |
handle_rtp_info(rt, url, seq, rtptime); |
761 |
} |
762 |
|
763 |
void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf, |
764 |
RTSPState *rt, const char *method) |
765 |
{ |
766 |
const char *p; |
767 |
|
768 |
/* NOTE: we do case independent match for broken servers */
|
769 |
p = buf; |
770 |
if (av_stristart(p, "Session:", &p)) { |
771 |
int t;
|
772 |
get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p); |
773 |
if (av_stristart(p, ";timeout=", &p) && |
774 |
(t = strtol(p, NULL, 10)) > 0) { |
775 |
reply->timeout = t; |
776 |
} |
777 |
} else if (av_stristart(p, "Content-Length:", &p)) { |
778 |
reply->content_length = strtol(p, NULL, 10); |
779 |
} else if (av_stristart(p, "Transport:", &p)) { |
780 |
rtsp_parse_transport(reply, p); |
781 |
} else if (av_stristart(p, "CSeq:", &p)) { |
782 |
reply->seq = strtol(p, NULL, 10); |
783 |
} else if (av_stristart(p, "Range:", &p)) { |
784 |
rtsp_parse_range_npt(p, &reply->range_start, &reply->range_end); |
785 |
} else if (av_stristart(p, "RealChallenge1:", &p)) { |
786 |
p += strspn(p, SPACE_CHARS); |
787 |
av_strlcpy(reply->real_challenge, p, sizeof(reply->real_challenge));
|
788 |
} else if (av_stristart(p, "Server:", &p)) { |
789 |
p += strspn(p, SPACE_CHARS); |
790 |
av_strlcpy(reply->server, p, sizeof(reply->server));
|
791 |
} else if (av_stristart(p, "Notice:", &p) || |
792 |
av_stristart(p, "X-Notice:", &p)) {
|
793 |
reply->notice = strtol(p, NULL, 10); |
794 |
} else if (av_stristart(p, "Location:", &p)) { |
795 |
p += strspn(p, SPACE_CHARS); |
796 |
av_strlcpy(reply->location, p , sizeof(reply->location));
|
797 |
} else if (av_stristart(p, "WWW-Authenticate:", &p) && rt) { |
798 |
p += strspn(p, SPACE_CHARS); |
799 |
ff_http_auth_handle_header(&rt->auth_state, "WWW-Authenticate", p);
|
800 |
} else if (av_stristart(p, "Authentication-Info:", &p) && rt) { |
801 |
p += strspn(p, SPACE_CHARS); |
802 |
ff_http_auth_handle_header(&rt->auth_state, "Authentication-Info", p);
|
803 |
} else if (av_stristart(p, "Content-Base:", &p) && rt) { |
804 |
p += strspn(p, SPACE_CHARS); |
805 |
if (method && !strcmp(method, "DESCRIBE")) |
806 |
av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
|
807 |
} else if (av_stristart(p, "RTP-Info:", &p) && rt) { |
808 |
p += strspn(p, SPACE_CHARS); |
809 |
if (method && !strcmp(method, "PLAY")) |
810 |
rtsp_parse_rtp_info(rt, p); |
811 |
} |
812 |
} |
813 |
|
814 |
/* skip a RTP/TCP interleaved packet */
|
815 |
void ff_rtsp_skip_packet(AVFormatContext *s)
|
816 |
{ |
817 |
RTSPState *rt = s->priv_data; |
818 |
int ret, len, len1;
|
819 |
uint8_t buf[1024];
|
820 |
|
821 |
ret = url_read_complete(rt->rtsp_hd, buf, 3);
|
822 |
if (ret != 3) |
823 |
return;
|
824 |
len = AV_RB16(buf + 1);
|
825 |
|
826 |
av_dlog(s, "skipping RTP packet len=%d\n", len);
|
827 |
|
828 |
/* skip payload */
|
829 |
while (len > 0) { |
830 |
len1 = len; |
831 |
if (len1 > sizeof(buf)) |
832 |
len1 = sizeof(buf);
|
833 |
ret = url_read_complete(rt->rtsp_hd, buf, len1); |
834 |
if (ret != len1)
|
835 |
return;
|
836 |
len -= len1; |
837 |
} |
838 |
} |
839 |
|
840 |
int ff_rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
|
841 |
unsigned char **content_ptr, |
842 |
int return_on_interleaved_data, const char *method) |
843 |
{ |
844 |
RTSPState *rt = s->priv_data; |
845 |
char buf[4096], buf1[1024], *q; |
846 |
unsigned char ch; |
847 |
const char *p; |
848 |
int ret, content_length, line_count = 0; |
849 |
unsigned char *content = NULL; |
850 |
|
851 |
memset(reply, 0, sizeof(*reply)); |
852 |
|
853 |
/* parse reply (XXX: use buffers) */
|
854 |
rt->last_reply[0] = '\0'; |
855 |
for (;;) {
|
856 |
q = buf; |
857 |
for (;;) {
|
858 |
ret = url_read_complete(rt->rtsp_hd, &ch, 1);
|
859 |
#ifdef DEBUG_RTP_TCP
|
860 |
av_dlog(s, "ret=%d c=%02x [%c]\n", ret, ch, ch);
|
861 |
#endif
|
862 |
if (ret != 1) |
863 |
return AVERROR_EOF;
|
864 |
if (ch == '\n') |
865 |
break;
|
866 |
if (ch == '$') { |
867 |
/* XXX: only parse it if first char on line ? */
|
868 |
if (return_on_interleaved_data) {
|
869 |
return 1; |
870 |
} else
|
871 |
ff_rtsp_skip_packet(s); |
872 |
} else if (ch != '\r') { |
873 |
if ((q - buf) < sizeof(buf) - 1) |
874 |
*q++ = ch; |
875 |
} |
876 |
} |
877 |
*q = '\0';
|
878 |
|
879 |
av_dlog(s, "line='%s'\n", buf);
|
880 |
|
881 |
/* test if last line */
|
882 |
if (buf[0] == '\0') |
883 |
break;
|
884 |
p = buf; |
885 |
if (line_count == 0) { |
886 |
/* get reply code */
|
887 |
get_word(buf1, sizeof(buf1), &p);
|
888 |
get_word(buf1, sizeof(buf1), &p);
|
889 |
reply->status_code = atoi(buf1); |
890 |
av_strlcpy(reply->reason, p, sizeof(reply->reason));
|
891 |
} else {
|
892 |
ff_rtsp_parse_line(reply, p, rt, method); |
893 |
av_strlcat(rt->last_reply, p, sizeof(rt->last_reply));
|
894 |
av_strlcat(rt->last_reply, "\n", sizeof(rt->last_reply)); |
895 |
} |
896 |
line_count++; |
897 |
} |
898 |
|
899 |
if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0') |
900 |
av_strlcpy(rt->session_id, reply->session_id, sizeof(rt->session_id));
|
901 |
|
902 |
content_length = reply->content_length; |
903 |
if (content_length > 0) { |
904 |
/* leave some room for a trailing '\0' (useful for simple parsing) */
|
905 |
content = av_malloc(content_length + 1);
|
906 |
(void)url_read_complete(rt->rtsp_hd, content, content_length);
|
907 |
content[content_length] = '\0';
|
908 |
} |
909 |
if (content_ptr)
|
910 |
*content_ptr = content; |
911 |
else
|
912 |
av_free(content); |
913 |
|
914 |
if (rt->seq != reply->seq) {
|
915 |
av_log(s, AV_LOG_WARNING, "CSeq %d expected, %d received.\n",
|
916 |
rt->seq, reply->seq); |
917 |
} |
918 |
|
919 |
/* EOS */
|
920 |
if (reply->notice == 2101 /* End-of-Stream Reached */ || |
921 |
reply->notice == 2104 /* Start-of-Stream Reached */ || |
922 |
reply->notice == 2306 /* Continuous Feed Terminated */) { |
923 |
rt->state = RTSP_STATE_IDLE; |
924 |
} else if (reply->notice >= 4400 && reply->notice < 5500) { |
925 |
return AVERROR(EIO); /* data or server error */ |
926 |
} else if (reply->notice == 2401 /* Ticket Expired */ || |
927 |
(reply->notice >= 5500 && reply->notice < 5600) /* end of term */ ) |
928 |
return AVERROR(EPERM);
|
929 |
|
930 |
return 0; |
931 |
} |
932 |
|
933 |
/**
|
934 |
* Send a command to the RTSP server without waiting for the reply.
|
935 |
*
|
936 |
* @param s RTSP (de)muxer context
|
937 |
* @param method the method for the request
|
938 |
* @param url the target url for the request
|
939 |
* @param headers extra header lines to include in the request
|
940 |
* @param send_content if non-null, the data to send as request body content
|
941 |
* @param send_content_length the length of the send_content data, or 0 if
|
942 |
* send_content is null
|
943 |
*
|
944 |
* @return zero if success, nonzero otherwise
|
945 |
*/
|
946 |
static int ff_rtsp_send_cmd_with_content_async(AVFormatContext *s, |
947 |
const char *method, const char *url, |
948 |
const char *headers, |
949 |
const unsigned char *send_content, |
950 |
int send_content_length)
|
951 |
{ |
952 |
RTSPState *rt = s->priv_data; |
953 |
char buf[4096], *out_buf; |
954 |
char base64buf[AV_BASE64_SIZE(sizeof(buf))]; |
955 |
|
956 |
/* Add in RTSP headers */
|
957 |
out_buf = buf; |
958 |
rt->seq++; |
959 |
snprintf(buf, sizeof(buf), "%s %s RTSP/1.0\r\n", method, url); |
960 |
if (headers)
|
961 |
av_strlcat(buf, headers, sizeof(buf));
|
962 |
av_strlcatf(buf, sizeof(buf), "CSeq: %d\r\n", rt->seq); |
963 |
if (rt->session_id[0] != '\0' && (!headers || |
964 |
!strstr(headers, "\nIf-Match:"))) {
|
965 |
av_strlcatf(buf, sizeof(buf), "Session: %s\r\n", rt->session_id); |
966 |
} |
967 |
if (rt->auth[0]) { |
968 |
char *str = ff_http_auth_create_response(&rt->auth_state,
|
969 |
rt->auth, url, method); |
970 |
if (str)
|
971 |
av_strlcat(buf, str, sizeof(buf));
|
972 |
av_free(str); |
973 |
} |
974 |
if (send_content_length > 0 && send_content) |
975 |
av_strlcatf(buf, sizeof(buf), "Content-Length: %d\r\n", send_content_length); |
976 |
av_strlcat(buf, "\r\n", sizeof(buf)); |
977 |
|
978 |
/* base64 encode rtsp if tunneling */
|
979 |
if (rt->control_transport == RTSP_MODE_TUNNEL) {
|
980 |
av_base64_encode(base64buf, sizeof(base64buf), buf, strlen(buf));
|
981 |
out_buf = base64buf; |
982 |
} |
983 |
|
984 |
av_dlog(s, "Sending:\n%s--\n", buf);
|
985 |
|
986 |
url_write(rt->rtsp_hd_out, out_buf, strlen(out_buf)); |
987 |
if (send_content_length > 0 && send_content) { |
988 |
if (rt->control_transport == RTSP_MODE_TUNNEL) {
|
989 |
av_log(s, AV_LOG_ERROR, "tunneling of RTSP requests "
|
990 |
"with content data not supported\n");
|
991 |
return AVERROR_PATCHWELCOME;
|
992 |
} |
993 |
url_write(rt->rtsp_hd_out, send_content, send_content_length); |
994 |
} |
995 |
rt->last_cmd_time = av_gettime(); |
996 |
|
997 |
return 0; |
998 |
} |
999 |
|
1000 |
int ff_rtsp_send_cmd_async(AVFormatContext *s, const char *method, |
1001 |
const char *url, const char *headers) |
1002 |
{ |
1003 |
return ff_rtsp_send_cmd_with_content_async(s, method, url, headers, NULL, 0); |
1004 |
} |
1005 |
|
1006 |
int ff_rtsp_send_cmd(AVFormatContext *s, const char *method, const char *url, |
1007 |
const char *headers, RTSPMessageHeader *reply, |
1008 |
unsigned char **content_ptr) |
1009 |
{ |
1010 |
return ff_rtsp_send_cmd_with_content(s, method, url, headers, reply,
|
1011 |
content_ptr, NULL, 0); |
1012 |
} |
1013 |
|
1014 |
int ff_rtsp_send_cmd_with_content(AVFormatContext *s,
|
1015 |
const char *method, const char *url, |
1016 |
const char *header, |
1017 |
RTSPMessageHeader *reply, |
1018 |
unsigned char **content_ptr, |
1019 |
const unsigned char *send_content, |
1020 |
int send_content_length)
|
1021 |
{ |
1022 |
RTSPState *rt = s->priv_data; |
1023 |
HTTPAuthType cur_auth_type; |
1024 |
int ret;
|
1025 |
|
1026 |
retry:
|
1027 |
cur_auth_type = rt->auth_state.auth_type; |
1028 |
if ((ret = ff_rtsp_send_cmd_with_content_async(s, method, url, header,
|
1029 |
send_content, |
1030 |
send_content_length))) |
1031 |
return ret;
|
1032 |
|
1033 |
if ((ret = ff_rtsp_read_reply(s, reply, content_ptr, 0, method) ) < 0) |
1034 |
return ret;
|
1035 |
|
1036 |
if (reply->status_code == 401 && cur_auth_type == HTTP_AUTH_NONE && |
1037 |
rt->auth_state.auth_type != HTTP_AUTH_NONE) |
1038 |
goto retry;
|
1039 |
|
1040 |
if (reply->status_code > 400){ |
1041 |
av_log(s, AV_LOG_ERROR, "method %s failed: %d%s\n",
|
1042 |
method, |
1043 |
reply->status_code, |
1044 |
reply->reason); |
1045 |
av_log(s, AV_LOG_DEBUG, "%s\n", rt->last_reply);
|
1046 |
} |
1047 |
|
1048 |
return 0; |
1049 |
} |
1050 |
|
1051 |
/**
|
1052 |
* @return 0 on success, <0 on error, 1 if protocol is unavailable.
|
1053 |
*/
|
1054 |
int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port, |
1055 |
int lower_transport, const char *real_challenge) |
1056 |
{ |
1057 |
RTSPState *rt = s->priv_data; |
1058 |
int rtx, j, i, err, interleave = 0; |
1059 |
RTSPStream *rtsp_st; |
1060 |
RTSPMessageHeader reply1, *reply = &reply1; |
1061 |
char cmd[2048]; |
1062 |
const char *trans_pref; |
1063 |
|
1064 |
if (rt->transport == RTSP_TRANSPORT_RDT)
|
1065 |
trans_pref = "x-pn-tng";
|
1066 |
else
|
1067 |
trans_pref = "RTP/AVP";
|
1068 |
|
1069 |
/* default timeout: 1 minute */
|
1070 |
rt->timeout = 60;
|
1071 |
|
1072 |
/* for each stream, make the setup request */
|
1073 |
/* XXX: we assume the same server is used for the control of each
|
1074 |
* RTSP stream */
|
1075 |
|
1076 |
for (j = RTSP_RTP_PORT_MIN, i = 0; i < rt->nb_rtsp_streams; ++i) { |
1077 |
char transport[2048]; |
1078 |
|
1079 |
/**
|
1080 |
* WMS serves all UDP data over a single connection, the RTX, which
|
1081 |
* isn't necessarily the first in the SDP but has to be the first
|
1082 |
* to be set up, else the second/third SETUP will fail with a 461.
|
1083 |
*/
|
1084 |
if (lower_transport == RTSP_LOWER_TRANSPORT_UDP &&
|
1085 |
rt->server_type == RTSP_SERVER_WMS) { |
1086 |
if (i == 0) { |
1087 |
/* rtx first */
|
1088 |
for (rtx = 0; rtx < rt->nb_rtsp_streams; rtx++) { |
1089 |
int len = strlen(rt->rtsp_streams[rtx]->control_url);
|
1090 |
if (len >= 4 && |
1091 |
!strcmp(rt->rtsp_streams[rtx]->control_url + len - 4,
|
1092 |
"/rtx"))
|
1093 |
break;
|
1094 |
} |
1095 |
if (rtx == rt->nb_rtsp_streams)
|
1096 |
return -1; /* no RTX found */ |
1097 |
rtsp_st = rt->rtsp_streams[rtx]; |
1098 |
} else
|
1099 |
rtsp_st = rt->rtsp_streams[i > rtx ? i : i - 1];
|
1100 |
} else
|
1101 |
rtsp_st = rt->rtsp_streams[i]; |
1102 |
|
1103 |
/* RTP/UDP */
|
1104 |
if (lower_transport == RTSP_LOWER_TRANSPORT_UDP) {
|
1105 |
char buf[256]; |
1106 |
|
1107 |
if (rt->server_type == RTSP_SERVER_WMS && i > 1) { |
1108 |
port = reply->transports[0].client_port_min;
|
1109 |
goto have_port;
|
1110 |
} |
1111 |
|
1112 |
/* first try in specified port range */
|
1113 |
if (RTSP_RTP_PORT_MIN != 0) { |
1114 |
while (j <= RTSP_RTP_PORT_MAX) {
|
1115 |
ff_url_join(buf, sizeof(buf), "rtp", NULL, host, -1, |
1116 |
"?localport=%d", j);
|
1117 |
/* we will use two ports per rtp stream (rtp and rtcp) */
|
1118 |
j += 2;
|
1119 |
if (ffurl_open(&rtsp_st->rtp_handle, buf, URL_RDWR) == 0) |
1120 |
goto rtp_opened;
|
1121 |
} |
1122 |
} |
1123 |
|
1124 |
#if 0
|
1125 |
/* then try on any port */
|
1126 |
if (ffurl_open(&rtsp_st->rtp_handle, "rtp://", URL_RDONLY) < 0) {
|
1127 |
err = AVERROR_INVALIDDATA;
|
1128 |
goto fail;
|
1129 |
}
|
1130 |
#else
|
1131 |
av_log(s, AV_LOG_ERROR, "Unable to open an input RTP port\n");
|
1132 |
err = AVERROR(EIO); |
1133 |
goto fail;
|
1134 |
#endif
|
1135 |
|
1136 |
rtp_opened:
|
1137 |
port = rtp_get_local_rtp_port(rtsp_st->rtp_handle); |
1138 |
have_port:
|
1139 |
snprintf(transport, sizeof(transport) - 1, |
1140 |
"%s/UDP;", trans_pref);
|
1141 |
if (rt->server_type != RTSP_SERVER_REAL)
|
1142 |
av_strlcat(transport, "unicast;", sizeof(transport)); |
1143 |
av_strlcatf(transport, sizeof(transport),
|
1144 |
"client_port=%d", port);
|
1145 |
if (rt->transport == RTSP_TRANSPORT_RTP &&
|
1146 |
!(rt->server_type == RTSP_SERVER_WMS && i > 0))
|
1147 |
av_strlcatf(transport, sizeof(transport), "-%d", port + 1); |
1148 |
} |
1149 |
|
1150 |
/* RTP/TCP */
|
1151 |
else if (lower_transport == RTSP_LOWER_TRANSPORT_TCP) { |
1152 |
/** For WMS streams, the application streams are only used for
|
1153 |
* UDP. When trying to set it up for TCP streams, the server
|
1154 |
* will return an error. Therefore, we skip those streams. */
|
1155 |
if (rt->server_type == RTSP_SERVER_WMS &&
|
1156 |
s->streams[rtsp_st->stream_index]->codec->codec_type == |
1157 |
AVMEDIA_TYPE_DATA) |
1158 |
continue;
|
1159 |
snprintf(transport, sizeof(transport) - 1, |
1160 |
"%s/TCP;", trans_pref);
|
1161 |
if (rt->transport != RTSP_TRANSPORT_RDT)
|
1162 |
av_strlcat(transport, "unicast;", sizeof(transport)); |
1163 |
av_strlcatf(transport, sizeof(transport),
|
1164 |
"interleaved=%d-%d",
|
1165 |
interleave, interleave + 1);
|
1166 |
interleave += 2;
|
1167 |
} |
1168 |
|
1169 |
else if (lower_transport == RTSP_LOWER_TRANSPORT_UDP_MULTICAST) { |
1170 |
snprintf(transport, sizeof(transport) - 1, |
1171 |
"%s/UDP;multicast", trans_pref);
|
1172 |
} |
1173 |
if (s->oformat) {
|
1174 |
av_strlcat(transport, ";mode=receive", sizeof(transport)); |
1175 |
} else if (rt->server_type == RTSP_SERVER_REAL || |
1176 |
rt->server_type == RTSP_SERVER_WMS) |
1177 |
av_strlcat(transport, ";mode=play", sizeof(transport)); |
1178 |
snprintf(cmd, sizeof(cmd),
|
1179 |
"Transport: %s\r\n",
|
1180 |
transport); |
1181 |
if (i == 0 && rt->server_type == RTSP_SERVER_REAL && CONFIG_RTPDEC) { |
1182 |
char real_res[41], real_csum[9]; |
1183 |
ff_rdt_calc_response_and_checksum(real_res, real_csum, |
1184 |
real_challenge); |
1185 |
av_strlcatf(cmd, sizeof(cmd),
|
1186 |
"If-Match: %s\r\n"
|
1187 |
"RealChallenge2: %s, sd=%s\r\n",
|
1188 |
rt->session_id, real_res, real_csum); |
1189 |
} |
1190 |
ff_rtsp_send_cmd(s, "SETUP", rtsp_st->control_url, cmd, reply, NULL); |
1191 |
if (reply->status_code == 461 /* Unsupported protocol */ && i == 0) { |
1192 |
err = 1;
|
1193 |
goto fail;
|
1194 |
} else if (reply->status_code != RTSP_STATUS_OK || |
1195 |
reply->nb_transports != 1) {
|
1196 |
err = AVERROR_INVALIDDATA; |
1197 |
goto fail;
|
1198 |
} |
1199 |
|
1200 |
/* XXX: same protocol for all streams is required */
|
1201 |
if (i > 0) { |
1202 |
if (reply->transports[0].lower_transport != rt->lower_transport || |
1203 |
reply->transports[0].transport != rt->transport) {
|
1204 |
err = AVERROR_INVALIDDATA; |
1205 |
goto fail;
|
1206 |
} |
1207 |
} else {
|
1208 |
rt->lower_transport = reply->transports[0].lower_transport;
|
1209 |
rt->transport = reply->transports[0].transport;
|
1210 |
} |
1211 |
|
1212 |
/* Fail if the server responded with another lower transport mode
|
1213 |
* than what we requested. */
|
1214 |
if (reply->transports[0].lower_transport != lower_transport) { |
1215 |
av_log(s, AV_LOG_ERROR, "Nonmatching transport in server reply\n");
|
1216 |
err = AVERROR_INVALIDDATA; |
1217 |
goto fail;
|
1218 |
} |
1219 |
|
1220 |
switch(reply->transports[0].lower_transport) { |
1221 |
case RTSP_LOWER_TRANSPORT_TCP:
|
1222 |
rtsp_st->interleaved_min = reply->transports[0].interleaved_min;
|
1223 |
rtsp_st->interleaved_max = reply->transports[0].interleaved_max;
|
1224 |
break;
|
1225 |
|
1226 |
case RTSP_LOWER_TRANSPORT_UDP: {
|
1227 |
char url[1024], options[30] = ""; |
1228 |
|
1229 |
if (rt->filter_source)
|
1230 |
av_strlcpy(options, "?connect=1", sizeof(options)); |
1231 |
/* Use source address if specified */
|
1232 |
if (reply->transports[0].source[0]) { |
1233 |
ff_url_join(url, sizeof(url), "rtp", NULL, |
1234 |
reply->transports[0].source,
|
1235 |
reply->transports[0].server_port_min, options);
|
1236 |
} else {
|
1237 |
ff_url_join(url, sizeof(url), "rtp", NULL, host, |
1238 |
reply->transports[0].server_port_min, options);
|
1239 |
} |
1240 |
if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && |
1241 |
rtp_set_remote_url(rtsp_st->rtp_handle, url) < 0) {
|
1242 |
err = AVERROR_INVALIDDATA; |
1243 |
goto fail;
|
1244 |
} |
1245 |
/* Try to initialize the connection state in a
|
1246 |
* potential NAT router by sending dummy packets.
|
1247 |
* RTP/RTCP dummy packets are used for RDT, too.
|
1248 |
*/
|
1249 |
if (!(rt->server_type == RTSP_SERVER_WMS && i > 1) && s->iformat && |
1250 |
CONFIG_RTPDEC) |
1251 |
rtp_send_punch_packets(rtsp_st->rtp_handle); |
1252 |
break;
|
1253 |
} |
1254 |
case RTSP_LOWER_TRANSPORT_UDP_MULTICAST: {
|
1255 |
char url[1024], namebuf[50]; |
1256 |
struct sockaddr_storage addr;
|
1257 |
int port, ttl;
|
1258 |
|
1259 |
if (reply->transports[0].destination.ss_family) { |
1260 |
addr = reply->transports[0].destination;
|
1261 |
port = reply->transports[0].port_min;
|
1262 |
ttl = reply->transports[0].ttl;
|
1263 |
} else {
|
1264 |
addr = rtsp_st->sdp_ip; |
1265 |
port = rtsp_st->sdp_port; |
1266 |
ttl = rtsp_st->sdp_ttl; |
1267 |
} |
1268 |
getnameinfo((struct sockaddr*) &addr, sizeof(addr), |
1269 |
namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST); |
1270 |
ff_url_join(url, sizeof(url), "rtp", NULL, namebuf, |
1271 |
port, "?ttl=%d", ttl);
|
1272 |
if (ffurl_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) { |
1273 |
err = AVERROR_INVALIDDATA; |
1274 |
goto fail;
|
1275 |
} |
1276 |
break;
|
1277 |
} |
1278 |
} |
1279 |
|
1280 |
if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
|
1281 |
goto fail;
|
1282 |
} |
1283 |
|
1284 |
if (reply->timeout > 0) |
1285 |
rt->timeout = reply->timeout; |
1286 |
|
1287 |
if (rt->server_type == RTSP_SERVER_REAL)
|
1288 |
rt->need_subscription = 1;
|
1289 |
|
1290 |
return 0; |
1291 |
|
1292 |
fail:
|
1293 |
ff_rtsp_undo_setup(s); |
1294 |
return err;
|
1295 |
} |
1296 |
|
1297 |
void ff_rtsp_close_connections(AVFormatContext *s)
|
1298 |
{ |
1299 |
RTSPState *rt = s->priv_data; |
1300 |
if (rt->rtsp_hd_out != rt->rtsp_hd) url_close(rt->rtsp_hd_out);
|
1301 |
url_close(rt->rtsp_hd); |
1302 |
rt->rtsp_hd = rt->rtsp_hd_out = NULL;
|
1303 |
} |
1304 |
|
1305 |
int ff_rtsp_connect(AVFormatContext *s)
|
1306 |
{ |
1307 |
RTSPState *rt = s->priv_data; |
1308 |
char host[1024], path[1024], tcpname[1024], cmd[2048], auth[128]; |
1309 |
char *option_list, *option, *filename;
|
1310 |
int port, err, tcp_fd;
|
1311 |
RTSPMessageHeader reply1 = {0}, *reply = &reply1;
|
1312 |
int lower_transport_mask = 0; |
1313 |
char real_challenge[64] = ""; |
1314 |
struct sockaddr_storage peer;
|
1315 |
socklen_t peer_len = sizeof(peer);
|
1316 |
|
1317 |
if (!ff_network_init())
|
1318 |
return AVERROR(EIO);
|
1319 |
redirect:
|
1320 |
rt->control_transport = RTSP_MODE_PLAIN; |
1321 |
/* extract hostname and port */
|
1322 |
av_url_split(NULL, 0, auth, sizeof(auth), |
1323 |
host, sizeof(host), &port, path, sizeof(path), s->filename); |
1324 |
if (*auth) {
|
1325 |
av_strlcpy(rt->auth, auth, sizeof(rt->auth));
|
1326 |
} |
1327 |
if (port < 0) |
1328 |
port = RTSP_DEFAULT_PORT; |
1329 |
|
1330 |
/* search for options */
|
1331 |
option_list = strrchr(path, '?');
|
1332 |
if (option_list) {
|
1333 |
/* Strip out the RTSP specific options, write out the rest of
|
1334 |
* the options back into the same string. */
|
1335 |
filename = option_list; |
1336 |
while (option_list) {
|
1337 |
/* move the option pointer */
|
1338 |
option = ++option_list; |
1339 |
option_list = strchr(option_list, '&');
|
1340 |
if (option_list)
|
1341 |
*option_list = 0;
|
1342 |
|
1343 |
/* handle the options */
|
1344 |
if (!strcmp(option, "udp")) { |
1345 |
lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP);
|
1346 |
} else if (!strcmp(option, "multicast")) { |
1347 |
lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_UDP_MULTICAST);
|
1348 |
} else if (!strcmp(option, "tcp")) { |
1349 |
lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
|
1350 |
} else if(!strcmp(option, "http")) { |
1351 |
lower_transport_mask |= (1<< RTSP_LOWER_TRANSPORT_TCP);
|
1352 |
rt->control_transport = RTSP_MODE_TUNNEL; |
1353 |
} else if (!strcmp(option, "filter_src")) { |
1354 |
rt->filter_source = 1;
|
1355 |
} else {
|
1356 |
/* Write options back into the buffer, using memmove instead
|
1357 |
* of strcpy since the strings may overlap. */
|
1358 |
int len = strlen(option);
|
1359 |
memmove(++filename, option, len); |
1360 |
filename += len; |
1361 |
if (option_list) *filename = '&'; |
1362 |
} |
1363 |
} |
1364 |
*filename = 0;
|
1365 |
} |
1366 |
|
1367 |
if (!lower_transport_mask)
|
1368 |
lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1; |
1369 |
|
1370 |
if (s->oformat) {
|
1371 |
/* Only UDP or TCP - UDP multicast isn't supported. */
|
1372 |
lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
|
1373 |
(1 << RTSP_LOWER_TRANSPORT_TCP);
|
1374 |
if (!lower_transport_mask || rt->control_transport == RTSP_MODE_TUNNEL) {
|
1375 |
av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
|
1376 |
"only UDP and TCP are supported for output.\n");
|
1377 |
err = AVERROR(EINVAL); |
1378 |
goto fail;
|
1379 |
} |
1380 |
} |
1381 |
|
1382 |
/* Construct the URI used in request; this is similar to s->filename,
|
1383 |
* but with authentication credentials removed and RTSP specific options
|
1384 |
* stripped out. */
|
1385 |
ff_url_join(rt->control_uri, sizeof(rt->control_uri), "rtsp", NULL, |
1386 |
host, port, "%s", path);
|
1387 |
|
1388 |
if (rt->control_transport == RTSP_MODE_TUNNEL) {
|
1389 |
/* set up initial handshake for tunneling */
|
1390 |
char httpname[1024]; |
1391 |
char sessioncookie[17]; |
1392 |
char headers[1024]; |
1393 |
|
1394 |
ff_url_join(httpname, sizeof(httpname), "http", auth, host, port, "%s", path); |
1395 |
snprintf(sessioncookie, sizeof(sessioncookie), "%08x%08x", |
1396 |
av_get_random_seed(), av_get_random_seed()); |
1397 |
|
1398 |
/* GET requests */
|
1399 |
if (ffurl_alloc(&rt->rtsp_hd, httpname, URL_RDONLY) < 0) { |
1400 |
err = AVERROR(EIO); |
1401 |
goto fail;
|
1402 |
} |
1403 |
|
1404 |
/* generate GET headers */
|
1405 |
snprintf(headers, sizeof(headers),
|
1406 |
"x-sessioncookie: %s\r\n"
|
1407 |
"Accept: application/x-rtsp-tunnelled\r\n"
|
1408 |
"Pragma: no-cache\r\n"
|
1409 |
"Cache-Control: no-cache\r\n",
|
1410 |
sessioncookie); |
1411 |
ff_http_set_headers(rt->rtsp_hd, headers); |
1412 |
|
1413 |
/* complete the connection */
|
1414 |
if (ffurl_connect(rt->rtsp_hd)) {
|
1415 |
err = AVERROR(EIO); |
1416 |
goto fail;
|
1417 |
} |
1418 |
|
1419 |
/* POST requests */
|
1420 |
if (ffurl_alloc(&rt->rtsp_hd_out, httpname, URL_WRONLY) < 0 ) { |
1421 |
err = AVERROR(EIO); |
1422 |
goto fail;
|
1423 |
} |
1424 |
|
1425 |
/* generate POST headers */
|
1426 |
snprintf(headers, sizeof(headers),
|
1427 |
"x-sessioncookie: %s\r\n"
|
1428 |
"Content-Type: application/x-rtsp-tunnelled\r\n"
|
1429 |
"Pragma: no-cache\r\n"
|
1430 |
"Cache-Control: no-cache\r\n"
|
1431 |
"Content-Length: 32767\r\n"
|
1432 |
"Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
|
1433 |
sessioncookie); |
1434 |
ff_http_set_headers(rt->rtsp_hd_out, headers); |
1435 |
ff_http_set_chunked_transfer_encoding(rt->rtsp_hd_out, 0);
|
1436 |
|
1437 |
/* Initialize the authentication state for the POST session. The HTTP
|
1438 |
* protocol implementation doesn't properly handle multi-pass
|
1439 |
* authentication for POST requests, since it would require one of
|
1440 |
* the following:
|
1441 |
* - implementing Expect: 100-continue, which many HTTP servers
|
1442 |
* don't support anyway, even less the RTSP servers that do HTTP
|
1443 |
* tunneling
|
1444 |
* - sending the whole POST data until getting a 401 reply specifying
|
1445 |
* what authentication method to use, then resending all that data
|
1446 |
* - waiting for potential 401 replies directly after sending the
|
1447 |
* POST header (waiting for some unspecified time)
|
1448 |
* Therefore, we copy the full auth state, which works for both basic
|
1449 |
* and digest. (For digest, we would have to synchronize the nonce
|
1450 |
* count variable between the two sessions, if we'd do more requests
|
1451 |
* with the original session, though.)
|
1452 |
*/
|
1453 |
ff_http_init_auth_state(rt->rtsp_hd_out, rt->rtsp_hd); |
1454 |
|
1455 |
/* complete the connection */
|
1456 |
if (ffurl_connect(rt->rtsp_hd_out)) {
|
1457 |
err = AVERROR(EIO); |
1458 |
goto fail;
|
1459 |
} |
1460 |
} else {
|
1461 |
/* open the tcp connection */
|
1462 |
ff_url_join(tcpname, sizeof(tcpname), "tcp", NULL, host, port, NULL); |
1463 |
if (ffurl_open(&rt->rtsp_hd, tcpname, URL_RDWR) < 0) { |
1464 |
err = AVERROR(EIO); |
1465 |
goto fail;
|
1466 |
} |
1467 |
rt->rtsp_hd_out = rt->rtsp_hd; |
1468 |
} |
1469 |
rt->seq = 0;
|
1470 |
|
1471 |
tcp_fd = url_get_file_handle(rt->rtsp_hd); |
1472 |
if (!getpeername(tcp_fd, (struct sockaddr*) &peer, &peer_len)) { |
1473 |
getnameinfo((struct sockaddr*) &peer, peer_len, host, sizeof(host), |
1474 |
NULL, 0, NI_NUMERICHOST); |
1475 |
} |
1476 |
|
1477 |
/* request options supported by the server; this also detects server
|
1478 |
* type */
|
1479 |
for (rt->server_type = RTSP_SERVER_RTP;;) {
|
1480 |
cmd[0] = 0; |
1481 |
if (rt->server_type == RTSP_SERVER_REAL)
|
1482 |
av_strlcat(cmd, |
1483 |
/**
|
1484 |
* The following entries are required for proper
|
1485 |
* streaming from a Realmedia server. They are
|
1486 |
* interdependent in some way although we currently
|
1487 |
* don't quite understand how. Values were copied
|
1488 |
* from mplayer SVN r23589.
|
1489 |
* @param CompanyID is a 16-byte ID in base64
|
1490 |
* @param ClientChallenge is a 16-byte ID in hex
|
1491 |
*/
|
1492 |
"ClientChallenge: 9e26d33f2984236010ef6253fb1887f7\r\n"
|
1493 |
"PlayerStarttime: [28/03/2003:22:50:23 00:00]\r\n"
|
1494 |
"CompanyID: KnKV4M4I/B2FjJ1TToLycw==\r\n"
|
1495 |
"GUID: 00000000-0000-0000-0000-000000000000\r\n",
|
1496 |
sizeof(cmd));
|
1497 |
ff_rtsp_send_cmd(s, "OPTIONS", rt->control_uri, cmd, reply, NULL); |
1498 |
if (reply->status_code != RTSP_STATUS_OK) {
|
1499 |
err = AVERROR_INVALIDDATA; |
1500 |
goto fail;
|
1501 |
} |
1502 |
|
1503 |
/* detect server type if not standard-compliant RTP */
|
1504 |
if (rt->server_type != RTSP_SERVER_REAL && reply->real_challenge[0]) { |
1505 |
rt->server_type = RTSP_SERVER_REAL; |
1506 |
continue;
|
1507 |
} else if (!strncasecmp(reply->server, "WMServer/", 9)) { |
1508 |
rt->server_type = RTSP_SERVER_WMS; |
1509 |
} else if (rt->server_type == RTSP_SERVER_REAL) |
1510 |
strcpy(real_challenge, reply->real_challenge); |
1511 |
break;
|
1512 |
} |
1513 |
|
1514 |
if (s->iformat && CONFIG_RTSP_DEMUXER)
|
1515 |
err = ff_rtsp_setup_input_streams(s, reply); |
1516 |
else if (CONFIG_RTSP_MUXER) |
1517 |
err = ff_rtsp_setup_output_streams(s, host); |
1518 |
if (err)
|
1519 |
goto fail;
|
1520 |
|
1521 |
do {
|
1522 |
int lower_transport = ff_log2_tab[lower_transport_mask &
|
1523 |
~(lower_transport_mask - 1)];
|
1524 |
|
1525 |
err = ff_rtsp_make_setup_request(s, host, port, lower_transport, |
1526 |
rt->server_type == RTSP_SERVER_REAL ? |
1527 |
real_challenge : NULL);
|
1528 |
if (err < 0) |
1529 |
goto fail;
|
1530 |
lower_transport_mask &= ~(1 << lower_transport);
|
1531 |
if (lower_transport_mask == 0 && err == 1) { |
1532 |
err = AVERROR(EPROTONOSUPPORT); |
1533 |
goto fail;
|
1534 |
} |
1535 |
} while (err);
|
1536 |
|
1537 |
rt->lower_transport_mask = lower_transport_mask; |
1538 |
av_strlcpy(rt->real_challenge, real_challenge, sizeof(rt->real_challenge));
|
1539 |
rt->state = RTSP_STATE_IDLE; |
1540 |
rt->seek_timestamp = 0; /* default is to start stream at position zero */ |
1541 |
return 0; |
1542 |
fail:
|
1543 |
ff_rtsp_close_streams(s); |
1544 |
ff_rtsp_close_connections(s); |
1545 |
if (reply->status_code >=300 && reply->status_code < 400 && s->iformat) { |
1546 |
av_strlcpy(s->filename, reply->location, sizeof(s->filename));
|
1547 |
av_log(s, AV_LOG_INFO, "Status %d: Redirecting to %s\n",
|
1548 |
reply->status_code, |
1549 |
s->filename); |
1550 |
goto redirect;
|
1551 |
} |
1552 |
ff_network_close(); |
1553 |
return err;
|
1554 |
} |
1555 |
#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */ |
1556 |
|
1557 |
#if CONFIG_RTPDEC
|
1558 |
static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st, |
1559 |
uint8_t *buf, int buf_size, int64_t wait_end)
|
1560 |
{ |
1561 |
RTSPState *rt = s->priv_data; |
1562 |
RTSPStream *rtsp_st; |
1563 |
int n, i, ret, tcp_fd, timeout_cnt = 0; |
1564 |
int max_p = 0; |
1565 |
struct pollfd *p = rt->p;
|
1566 |
|
1567 |
for (;;) {
|
1568 |
if (url_interrupt_cb())
|
1569 |
return AVERROR_EXIT;
|
1570 |
if (wait_end && wait_end - av_gettime() < 0) |
1571 |
return AVERROR(EAGAIN);
|
1572 |
max_p = 0;
|
1573 |
if (rt->rtsp_hd) {
|
1574 |
tcp_fd = url_get_file_handle(rt->rtsp_hd); |
1575 |
p[max_p].fd = tcp_fd; |
1576 |
p[max_p++].events = POLLIN; |
1577 |
} else {
|
1578 |
tcp_fd = -1;
|
1579 |
} |
1580 |
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
1581 |
rtsp_st = rt->rtsp_streams[i]; |
1582 |
if (rtsp_st->rtp_handle) {
|
1583 |
p[max_p].fd = url_get_file_handle(rtsp_st->rtp_handle); |
1584 |
p[max_p++].events = POLLIN; |
1585 |
p[max_p].fd = rtp_get_rtcp_file_handle(rtsp_st->rtp_handle); |
1586 |
p[max_p++].events = POLLIN; |
1587 |
} |
1588 |
} |
1589 |
n = poll(p, max_p, POLL_TIMEOUT_MS); |
1590 |
if (n > 0) { |
1591 |
int j = 1 - (tcp_fd == -1); |
1592 |
timeout_cnt = 0;
|
1593 |
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
1594 |
rtsp_st = rt->rtsp_streams[i]; |
1595 |
if (rtsp_st->rtp_handle) {
|
1596 |
if (p[j].revents & POLLIN || p[j+1].revents & POLLIN) { |
1597 |
ret = ffurl_read(rtsp_st->rtp_handle, buf, buf_size); |
1598 |
if (ret > 0) { |
1599 |
*prtsp_st = rtsp_st; |
1600 |
return ret;
|
1601 |
} |
1602 |
} |
1603 |
j+=2;
|
1604 |
} |
1605 |
} |
1606 |
#if CONFIG_RTSP_DEMUXER
|
1607 |
if (tcp_fd != -1 && p[0].revents & POLLIN) { |
1608 |
RTSPMessageHeader reply; |
1609 |
|
1610 |
ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL); |
1611 |
if (ret < 0) |
1612 |
return ret;
|
1613 |
/* XXX: parse message */
|
1614 |
if (rt->state != RTSP_STATE_STREAMING)
|
1615 |
return 0; |
1616 |
} |
1617 |
#endif
|
1618 |
} else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) { |
1619 |
return AVERROR(ETIMEDOUT);
|
1620 |
} else if (n < 0 && errno != EINTR) |
1621 |
return AVERROR(errno);
|
1622 |
} |
1623 |
} |
1624 |
|
1625 |
int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
|
1626 |
{ |
1627 |
RTSPState *rt = s->priv_data; |
1628 |
int ret, len;
|
1629 |
RTSPStream *rtsp_st, *first_queue_st = NULL;
|
1630 |
int64_t wait_end = 0;
|
1631 |
|
1632 |
if (rt->nb_byes == rt->nb_rtsp_streams)
|
1633 |
return AVERROR_EOF;
|
1634 |
|
1635 |
/* get next frames from the same RTP packet */
|
1636 |
if (rt->cur_transport_priv) {
|
1637 |
if (rt->transport == RTSP_TRANSPORT_RDT) {
|
1638 |
ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0); |
1639 |
} else
|
1640 |
ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0); |
1641 |
if (ret == 0) { |
1642 |
rt->cur_transport_priv = NULL;
|
1643 |
return 0; |
1644 |
} else if (ret == 1) { |
1645 |
return 0; |
1646 |
} else
|
1647 |
rt->cur_transport_priv = NULL;
|
1648 |
} |
1649 |
|
1650 |
if (rt->transport == RTSP_TRANSPORT_RTP) {
|
1651 |
int i;
|
1652 |
int64_t first_queue_time = 0;
|
1653 |
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
1654 |
RTPDemuxContext *rtpctx = rt->rtsp_streams[i]->transport_priv; |
1655 |
int64_t queue_time; |
1656 |
if (!rtpctx)
|
1657 |
continue;
|
1658 |
queue_time = ff_rtp_queued_packet_time(rtpctx); |
1659 |
if (queue_time && (queue_time - first_queue_time < 0 || |
1660 |
!first_queue_time)) { |
1661 |
first_queue_time = queue_time; |
1662 |
first_queue_st = rt->rtsp_streams[i]; |
1663 |
} |
1664 |
} |
1665 |
if (first_queue_time)
|
1666 |
wait_end = first_queue_time + s->max_delay; |
1667 |
} |
1668 |
|
1669 |
/* read next RTP packet */
|
1670 |
redo:
|
1671 |
if (!rt->recvbuf) {
|
1672 |
rt->recvbuf = av_malloc(RECVBUF_SIZE); |
1673 |
if (!rt->recvbuf)
|
1674 |
return AVERROR(ENOMEM);
|
1675 |
} |
1676 |
|
1677 |
switch(rt->lower_transport) {
|
1678 |
default:
|
1679 |
#if CONFIG_RTSP_DEMUXER
|
1680 |
case RTSP_LOWER_TRANSPORT_TCP:
|
1681 |
len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE); |
1682 |
break;
|
1683 |
#endif
|
1684 |
case RTSP_LOWER_TRANSPORT_UDP:
|
1685 |
case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
|
1686 |
len = udp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE, wait_end); |
1687 |
if (len > 0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP) |
1688 |
rtp_check_and_send_back_rr(rtsp_st->transport_priv, len); |
1689 |
break;
|
1690 |
} |
1691 |
if (len == AVERROR(EAGAIN) && first_queue_st &&
|
1692 |
rt->transport == RTSP_TRANSPORT_RTP) { |
1693 |
rtsp_st = first_queue_st; |
1694 |
ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, NULL, 0); |
1695 |
goto end;
|
1696 |
} |
1697 |
if (len < 0) |
1698 |
return len;
|
1699 |
if (len == 0) |
1700 |
return AVERROR_EOF;
|
1701 |
if (rt->transport == RTSP_TRANSPORT_RDT) {
|
1702 |
ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len); |
1703 |
} else {
|
1704 |
ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len); |
1705 |
if (ret < 0) { |
1706 |
/* Either bad packet, or a RTCP packet. Check if the
|
1707 |
* first_rtcp_ntp_time field was initialized. */
|
1708 |
RTPDemuxContext *rtpctx = rtsp_st->transport_priv; |
1709 |
if (rtpctx->first_rtcp_ntp_time != AV_NOPTS_VALUE) {
|
1710 |
/* first_rtcp_ntp_time has been initialized for this stream,
|
1711 |
* copy the same value to all other uninitialized streams,
|
1712 |
* in order to map their timestamp origin to the same ntp time
|
1713 |
* as this one. */
|
1714 |
int i;
|
1715 |
AVStream *st = NULL;
|
1716 |
if (rtsp_st->stream_index >= 0) |
1717 |
st = s->streams[rtsp_st->stream_index]; |
1718 |
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
1719 |
RTPDemuxContext *rtpctx2 = rt->rtsp_streams[i]->transport_priv; |
1720 |
AVStream *st2 = NULL;
|
1721 |
if (rt->rtsp_streams[i]->stream_index >= 0) |
1722 |
st2 = s->streams[rt->rtsp_streams[i]->stream_index]; |
1723 |
if (rtpctx2 && st && st2 &&
|
1724 |
rtpctx2->first_rtcp_ntp_time == AV_NOPTS_VALUE) { |
1725 |
rtpctx2->first_rtcp_ntp_time = rtpctx->first_rtcp_ntp_time; |
1726 |
rtpctx2->rtcp_ts_offset = av_rescale_q( |
1727 |
rtpctx->rtcp_ts_offset, st->time_base, |
1728 |
st2->time_base); |
1729 |
} |
1730 |
} |
1731 |
} |
1732 |
if (ret == -RTCP_BYE) {
|
1733 |
rt->nb_byes++; |
1734 |
|
1735 |
av_log(s, AV_LOG_DEBUG, "Received BYE for stream %d (%d/%d)\n",
|
1736 |
rtsp_st->stream_index, rt->nb_byes, rt->nb_rtsp_streams); |
1737 |
|
1738 |
if (rt->nb_byes == rt->nb_rtsp_streams)
|
1739 |
return AVERROR_EOF;
|
1740 |
} |
1741 |
} |
1742 |
} |
1743 |
end:
|
1744 |
if (ret < 0) |
1745 |
goto redo;
|
1746 |
if (ret == 1) |
1747 |
/* more packets may follow, so we save the RTP context */
|
1748 |
rt->cur_transport_priv = rtsp_st->transport_priv; |
1749 |
|
1750 |
return ret;
|
1751 |
} |
1752 |
#endif /* CONFIG_RTPDEC */ |
1753 |
|
1754 |
#if CONFIG_SDP_DEMUXER
|
1755 |
static int sdp_probe(AVProbeData *p1) |
1756 |
{ |
1757 |
const char *p = p1->buf, *p_end = p1->buf + p1->buf_size; |
1758 |
|
1759 |
/* we look for a line beginning "c=IN IP" */
|
1760 |
while (p < p_end && *p != '\0') { |
1761 |
if (p + sizeof("c=IN IP") - 1 < p_end && |
1762 |
av_strstart(p, "c=IN IP", NULL)) |
1763 |
return AVPROBE_SCORE_MAX / 2; |
1764 |
|
1765 |
while (p < p_end - 1 && *p != '\n') p++; |
1766 |
if (++p >= p_end)
|
1767 |
break;
|
1768 |
if (*p == '\r') |
1769 |
p++; |
1770 |
} |
1771 |
return 0; |
1772 |
} |
1773 |
|
1774 |
static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap) |
1775 |
{ |
1776 |
RTSPState *rt = s->priv_data; |
1777 |
RTSPStream *rtsp_st; |
1778 |
int size, i, err;
|
1779 |
char *content;
|
1780 |
char url[1024]; |
1781 |
|
1782 |
if (!ff_network_init())
|
1783 |
return AVERROR(EIO);
|
1784 |
|
1785 |
/* read the whole sdp file */
|
1786 |
/* XXX: better loading */
|
1787 |
content = av_malloc(SDP_MAX_SIZE); |
1788 |
size = avio_read(s->pb, content, SDP_MAX_SIZE - 1);
|
1789 |
if (size <= 0) { |
1790 |
av_free(content); |
1791 |
return AVERROR_INVALIDDATA;
|
1792 |
} |
1793 |
content[size] ='\0';
|
1794 |
|
1795 |
err = ff_sdp_parse(s, content); |
1796 |
av_free(content); |
1797 |
if (err) goto fail; |
1798 |
|
1799 |
/* open each RTP stream */
|
1800 |
for (i = 0; i < rt->nb_rtsp_streams; i++) { |
1801 |
char namebuf[50]; |
1802 |
rtsp_st = rt->rtsp_streams[i]; |
1803 |
|
1804 |
getnameinfo((struct sockaddr*) &rtsp_st->sdp_ip, sizeof(rtsp_st->sdp_ip), |
1805 |
namebuf, sizeof(namebuf), NULL, 0, NI_NUMERICHOST); |
1806 |
ff_url_join(url, sizeof(url), "rtp", NULL, |
1807 |
namebuf, rtsp_st->sdp_port, |
1808 |
"?localport=%d&ttl=%d", rtsp_st->sdp_port,
|
1809 |
rtsp_st->sdp_ttl); |
1810 |
if (ffurl_open(&rtsp_st->rtp_handle, url, URL_RDWR) < 0) { |
1811 |
err = AVERROR_INVALIDDATA; |
1812 |
goto fail;
|
1813 |
} |
1814 |
if ((err = rtsp_open_transport_ctx(s, rtsp_st)))
|
1815 |
goto fail;
|
1816 |
} |
1817 |
return 0; |
1818 |
fail:
|
1819 |
ff_rtsp_close_streams(s); |
1820 |
ff_network_close(); |
1821 |
return err;
|
1822 |
} |
1823 |
|
1824 |
static int sdp_read_close(AVFormatContext *s) |
1825 |
{ |
1826 |
ff_rtsp_close_streams(s); |
1827 |
ff_network_close(); |
1828 |
return 0; |
1829 |
} |
1830 |
|
1831 |
AVInputFormat ff_sdp_demuxer = { |
1832 |
"sdp",
|
1833 |
NULL_IF_CONFIG_SMALL("SDP"),
|
1834 |
sizeof(RTSPState),
|
1835 |
sdp_probe, |
1836 |
sdp_read_header, |
1837 |
ff_rtsp_fetch_packet, |
1838 |
sdp_read_close, |
1839 |
}; |
1840 |
#endif /* CONFIG_SDP_DEMUXER */ |
1841 |
|
1842 |
#if CONFIG_RTP_DEMUXER
|
1843 |
static int rtp_probe(AVProbeData *p) |
1844 |
{ |
1845 |
if (av_strstart(p->filename, "rtp:", NULL)) |
1846 |
return AVPROBE_SCORE_MAX;
|
1847 |
return 0; |
1848 |
} |
1849 |
|
1850 |
static int rtp_read_header(AVFormatContext *s, |
1851 |
AVFormatParameters *ap) |
1852 |
{ |
1853 |
uint8_t recvbuf[1500];
|
1854 |
char host[500], sdp[500]; |
1855 |
int ret, port;
|
1856 |
URLContext* in = NULL;
|
1857 |
int payload_type;
|
1858 |
AVCodecContext codec; |
1859 |
struct sockaddr_storage addr;
|
1860 |
AVIOContext pb; |
1861 |
socklen_t addrlen = sizeof(addr);
|
1862 |
|
1863 |
if (!ff_network_init())
|
1864 |
return AVERROR(EIO);
|
1865 |
|
1866 |
ret = ffurl_open(&in, s->filename, URL_RDONLY); |
1867 |
if (ret)
|
1868 |
goto fail;
|
1869 |
|
1870 |
while (1) { |
1871 |
ret = ffurl_read(in, recvbuf, sizeof(recvbuf));
|
1872 |
if (ret == AVERROR(EAGAIN))
|
1873 |
continue;
|
1874 |
if (ret < 0) |
1875 |
goto fail;
|
1876 |
if (ret < 12) { |
1877 |
av_log(s, AV_LOG_WARNING, "Received too short packet\n");
|
1878 |
continue;
|
1879 |
} |
1880 |
|
1881 |
if ((recvbuf[0] & 0xc0) != 0x80) { |
1882 |
av_log(s, AV_LOG_WARNING, "Unsupported RTP version packet "
|
1883 |
"received\n");
|
1884 |
continue;
|
1885 |
} |
1886 |
|
1887 |
payload_type = recvbuf[1] & 0x7f; |
1888 |
break;
|
1889 |
} |
1890 |
getsockname(url_get_file_handle(in), (struct sockaddr*) &addr, &addrlen);
|
1891 |
url_close(in); |
1892 |
in = NULL;
|
1893 |
|
1894 |
memset(&codec, 0, sizeof(codec)); |
1895 |
if (ff_rtp_get_codec_info(&codec, payload_type)) {
|
1896 |
av_log(s, AV_LOG_ERROR, "Unable to receive RTP payload type %d "
|
1897 |
"without an SDP file describing it\n",
|
1898 |
payload_type); |
1899 |
goto fail;
|
1900 |
} |
1901 |
if (codec.codec_type != AVMEDIA_TYPE_DATA) {
|
1902 |
av_log(s, AV_LOG_WARNING, "Guessing on RTP content - if not received "
|
1903 |
"properly you need an SDP file "
|
1904 |
"describing it\n");
|
1905 |
} |
1906 |
|
1907 |
av_url_split(NULL, 0, NULL, 0, host, sizeof(host), &port, |
1908 |
NULL, 0, s->filename); |
1909 |
|
1910 |
snprintf(sdp, sizeof(sdp),
|
1911 |
"v=0\r\nc=IN IP%d %s\r\nm=%s %d RTP/AVP %d\r\n",
|
1912 |
addr.ss_family == AF_INET ? 4 : 6, host, |
1913 |
codec.codec_type == AVMEDIA_TYPE_DATA ? "application" :
|
1914 |
codec.codec_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio", |
1915 |
port, payload_type); |
1916 |
av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", sdp);
|
1917 |
|
1918 |
ffio_init_context(&pb, sdp, strlen(sdp), 0, NULL, NULL, NULL, NULL); |
1919 |
s->pb = &pb; |
1920 |
|
1921 |
/* sdp_read_header initializes this again */
|
1922 |
ff_network_close(); |
1923 |
|
1924 |
ret = sdp_read_header(s, ap); |
1925 |
s->pb = NULL;
|
1926 |
return ret;
|
1927 |
|
1928 |
fail:
|
1929 |
if (in)
|
1930 |
url_close(in); |
1931 |
ff_network_close(); |
1932 |
return ret;
|
1933 |
} |
1934 |
|
1935 |
AVInputFormat ff_rtp_demuxer = { |
1936 |
"rtp",
|
1937 |
NULL_IF_CONFIG_SMALL("RTP input format"),
|
1938 |
sizeof(RTSPState),
|
1939 |
rtp_probe, |
1940 |
rtp_read_header, |
1941 |
ff_rtsp_fetch_packet, |
1942 |
sdp_read_close, |
1943 |
.flags = AVFMT_NOFILE, |
1944 |
}; |
1945 |
#endif /* CONFIG_RTP_DEMUXER */ |
1946 |
|