mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
rtsp: Split out the RTSP demuxer functions to a separate, new file
Originally committed as revision 25601 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Martin Storsjö
parent
c2688f3ac8
commit
0526c6f7c7
@ -243,7 +243,7 @@ OBJS-$(CONFIG_RTPDEC) += rdt.o \
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rtpdec_svq3.o \
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rtpdec_vp8.o \
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rtpdec_xiph.o
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OBJS-$(CONFIG_RTSP_DEMUXER) += rtsp.o httpauth.o
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OBJS-$(CONFIG_RTSP_DEMUXER) += rtsp.o rtspdec.o httpauth.o
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OBJS-$(CONFIG_RTSP_MUXER) += rtsp.o rtspenc.o httpauth.o \
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rtpenc_chain.o
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OBJS-$(CONFIG_SAP_DEMUXER) += sapdec.o
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@ -411,7 +411,7 @@ static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
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}
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}
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static int sdp_parse(AVFormatContext *s, const char *content)
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int ff_sdp_parse(AVFormatContext *s, const char *content)
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{
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const char *p;
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int letter;
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@ -1177,98 +1177,6 @@ fail:
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return err;
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}
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static int rtsp_read_play(AVFormatContext *s)
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{
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RTSPState *rt = s->priv_data;
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RTSPMessageHeader reply1, *reply = &reply1;
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int i;
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char cmd[1024];
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av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
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rt->nb_byes = 0;
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if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
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if (rt->state == RTSP_STATE_PAUSED) {
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cmd[0] = 0;
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} else {
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snprintf(cmd, sizeof(cmd),
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"Range: npt=%0.3f-\r\n",
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(double)rt->seek_timestamp / AV_TIME_BASE);
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}
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ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
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if (reply->status_code != RTSP_STATUS_OK) {
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return -1;
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}
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if (rt->transport == RTSP_TRANSPORT_RTP) {
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for (i = 0; i < rt->nb_rtsp_streams; i++) {
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RTSPStream *rtsp_st = rt->rtsp_streams[i];
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RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
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AVStream *st = NULL;
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if (!rtpctx)
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continue;
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if (rtsp_st->stream_index >= 0)
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st = s->streams[rtsp_st->stream_index];
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ff_rtp_reset_packet_queue(rtpctx);
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if (reply->range_start != AV_NOPTS_VALUE) {
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rtpctx->last_rtcp_ntp_time = AV_NOPTS_VALUE;
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rtpctx->first_rtcp_ntp_time = AV_NOPTS_VALUE;
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if (st)
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rtpctx->range_start_offset =
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av_rescale_q(reply->range_start, AV_TIME_BASE_Q,
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st->time_base);
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}
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}
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}
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}
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rt->state = RTSP_STATE_STREAMING;
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return 0;
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}
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#if CONFIG_RTSP_DEMUXER
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static int rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
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{
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RTSPState *rt = s->priv_data;
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char cmd[1024];
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unsigned char *content = NULL;
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int ret;
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/* describe the stream */
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snprintf(cmd, sizeof(cmd),
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"Accept: application/sdp\r\n");
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if (rt->server_type == RTSP_SERVER_REAL) {
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/**
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* The Require: attribute is needed for proper streaming from
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* Realmedia servers.
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*/
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av_strlcat(cmd,
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"Require: com.real.retain-entity-for-setup\r\n",
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sizeof(cmd));
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}
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ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
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if (!content)
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return AVERROR_INVALIDDATA;
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if (reply->status_code != RTSP_STATUS_OK) {
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av_freep(&content);
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return AVERROR_INVALIDDATA;
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}
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av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", content);
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/* now we got the SDP description, we parse it */
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ret = sdp_parse(s, (const char *)content);
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av_freep(&content);
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if (ret < 0)
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return AVERROR_INVALIDDATA;
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return 0;
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}
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#else /* !CONFIG_RTSP_DEMUXER */
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/* A declaration of this function is needed so that the function is
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* defined when parsing the call to it, even if dead code elimination
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* will remove the call later.
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*/
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static int rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply);
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#endif /* !CONFIG_RTSP_DEMUXER */
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void ff_rtsp_close_connections(AVFormatContext *s)
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{
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RTSPState *rt = s->priv_data;
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@ -1485,7 +1393,7 @@ redirect:
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}
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if (s->iformat && CONFIG_RTSP_DEMUXER)
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err = rtsp_setup_input_streams(s, reply);
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err = ff_rtsp_setup_input_streams(s, reply);
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else if (CONFIG_RTSP_MUXER)
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err = ff_rtsp_setup_output_streams(s, host);
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if (err)
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@ -1597,10 +1505,7 @@ static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
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}
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}
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static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
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uint8_t *buf, int buf_size);
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static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
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int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
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{
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RTSPState *rt = s->priv_data;
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int ret, len;
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@ -1653,7 +1558,7 @@ static int rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
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default:
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#if CONFIG_RTSP_DEMUXER
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case RTSP_LOWER_TRANSPORT_TCP:
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len = tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
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len = ff_rtsp_tcp_read_packet(s, &rtsp_st, rt->recvbuf, RECVBUF_SIZE);
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break;
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#endif
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case RTSP_LOWER_TRANSPORT_UDP:
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@ -1716,255 +1621,6 @@ end:
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}
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#endif /* CONFIG_RTPDEC */
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#if CONFIG_RTSP_DEMUXER
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static int rtsp_probe(AVProbeData *p)
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{
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if (av_strstart(p->filename, "rtsp:", NULL))
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return AVPROBE_SCORE_MAX;
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return 0;
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}
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static int rtsp_read_header(AVFormatContext *s,
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AVFormatParameters *ap)
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{
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RTSPState *rt = s->priv_data;
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int ret;
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ret = ff_rtsp_connect(s);
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if (ret)
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return ret;
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rt->real_setup_cache = av_mallocz(2 * s->nb_streams * sizeof(*rt->real_setup_cache));
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if (!rt->real_setup_cache)
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return AVERROR(ENOMEM);
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rt->real_setup = rt->real_setup_cache + s->nb_streams * sizeof(*rt->real_setup);
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if (ap->initial_pause) {
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/* do not start immediately */
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} else {
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if (rtsp_read_play(s) < 0) {
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ff_rtsp_close_streams(s);
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ff_rtsp_close_connections(s);
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return AVERROR_INVALIDDATA;
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}
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}
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return 0;
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}
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static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
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uint8_t *buf, int buf_size)
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{
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RTSPState *rt = s->priv_data;
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int id, len, i, ret;
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RTSPStream *rtsp_st;
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#ifdef DEBUG_RTP_TCP
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dprintf(s, "tcp_read_packet:\n");
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#endif
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redo:
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for (;;) {
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RTSPMessageHeader reply;
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ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
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if (ret < 0)
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return ret;
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if (ret == 1) /* received '$' */
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break;
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/* XXX: parse message */
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if (rt->state != RTSP_STATE_STREAMING)
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return 0;
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}
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ret = url_read_complete(rt->rtsp_hd, buf, 3);
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if (ret != 3)
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return -1;
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id = buf[0];
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len = AV_RB16(buf + 1);
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#ifdef DEBUG_RTP_TCP
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dprintf(s, "id=%d len=%d\n", id, len);
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#endif
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if (len > buf_size || len < 12)
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goto redo;
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/* get the data */
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ret = url_read_complete(rt->rtsp_hd, buf, len);
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if (ret != len)
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return -1;
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if (rt->transport == RTSP_TRANSPORT_RDT &&
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ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
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return -1;
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/* find the matching stream */
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for (i = 0; i < rt->nb_rtsp_streams; i++) {
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rtsp_st = rt->rtsp_streams[i];
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if (id >= rtsp_st->interleaved_min &&
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id <= rtsp_st->interleaved_max)
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goto found;
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}
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goto redo;
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found:
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*prtsp_st = rtsp_st;
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return len;
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}
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static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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RTSPState *rt = s->priv_data;
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int ret;
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RTSPMessageHeader reply1, *reply = &reply1;
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char cmd[1024];
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if (rt->server_type == RTSP_SERVER_REAL) {
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int i;
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for (i = 0; i < s->nb_streams; i++)
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rt->real_setup[i] = s->streams[i]->discard;
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if (!rt->need_subscription) {
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if (memcmp (rt->real_setup, rt->real_setup_cache,
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sizeof(enum AVDiscard) * s->nb_streams)) {
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snprintf(cmd, sizeof(cmd),
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"Unsubscribe: %s\r\n",
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rt->last_subscription);
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ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
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cmd, reply, NULL);
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if (reply->status_code != RTSP_STATUS_OK)
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return AVERROR_INVALIDDATA;
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rt->need_subscription = 1;
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}
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}
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if (rt->need_subscription) {
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int r, rule_nr, first = 1;
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memcpy(rt->real_setup_cache, rt->real_setup,
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sizeof(enum AVDiscard) * s->nb_streams);
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rt->last_subscription[0] = 0;
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snprintf(cmd, sizeof(cmd),
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"Subscribe: ");
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for (i = 0; i < rt->nb_rtsp_streams; i++) {
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rule_nr = 0;
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for (r = 0; r < s->nb_streams; r++) {
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if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
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if (s->streams[r]->discard != AVDISCARD_ALL) {
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if (!first)
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av_strlcat(rt->last_subscription, ",",
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sizeof(rt->last_subscription));
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ff_rdt_subscribe_rule(
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rt->last_subscription,
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sizeof(rt->last_subscription), i, rule_nr);
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first = 0;
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}
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rule_nr++;
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}
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}
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}
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av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
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ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
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cmd, reply, NULL);
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if (reply->status_code != RTSP_STATUS_OK)
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return AVERROR_INVALIDDATA;
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rt->need_subscription = 0;
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if (rt->state == RTSP_STATE_STREAMING)
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rtsp_read_play (s);
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}
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}
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ret = rtsp_fetch_packet(s, pkt);
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if (ret < 0)
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return ret;
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/* send dummy request to keep TCP connection alive */
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if ((av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
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if (rt->server_type == RTSP_SERVER_WMS) {
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ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
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} else {
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ff_rtsp_send_cmd_async(s, "OPTIONS", "*", NULL);
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}
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}
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return 0;
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}
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/* pause the stream */
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static int rtsp_read_pause(AVFormatContext *s)
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{
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RTSPState *rt = s->priv_data;
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RTSPMessageHeader reply1, *reply = &reply1;
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if (rt->state != RTSP_STATE_STREAMING)
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return 0;
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else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
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ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
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if (reply->status_code != RTSP_STATUS_OK) {
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return -1;
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}
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}
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rt->state = RTSP_STATE_PAUSED;
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return 0;
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}
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static int rtsp_read_seek(AVFormatContext *s, int stream_index,
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int64_t timestamp, int flags)
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{
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RTSPState *rt = s->priv_data;
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rt->seek_timestamp = av_rescale_q(timestamp,
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s->streams[stream_index]->time_base,
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AV_TIME_BASE_Q);
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switch(rt->state) {
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default:
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case RTSP_STATE_IDLE:
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break;
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case RTSP_STATE_STREAMING:
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if (rtsp_read_pause(s) != 0)
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return -1;
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rt->state = RTSP_STATE_SEEKING;
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if (rtsp_read_play(s) != 0)
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return -1;
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break;
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case RTSP_STATE_PAUSED:
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rt->state = RTSP_STATE_IDLE;
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break;
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}
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return 0;
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}
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static int rtsp_read_close(AVFormatContext *s)
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{
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RTSPState *rt = s->priv_data;
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#if 0
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/* NOTE: it is valid to flush the buffer here */
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if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
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url_fclose(&rt->rtsp_gb);
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}
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#endif
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ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
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ff_rtsp_close_streams(s);
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ff_rtsp_close_connections(s);
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ff_network_close();
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rt->real_setup = NULL;
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av_freep(&rt->real_setup_cache);
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return 0;
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}
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AVInputFormat rtsp_demuxer = {
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"rtsp",
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NULL_IF_CONFIG_SMALL("RTSP input format"),
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sizeof(RTSPState),
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rtsp_probe,
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rtsp_read_header,
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rtsp_read_packet,
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rtsp_read_close,
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rtsp_read_seek,
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.flags = AVFMT_NOFILE,
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.read_play = rtsp_read_play,
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.read_pause = rtsp_read_pause,
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};
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#endif /* CONFIG_RTSP_DEMUXER */
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#if CONFIG_SDP_DEMUXER
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static int sdp_probe(AVProbeData *p1)
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{
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@ -2006,7 +1662,7 @@ static int sdp_read_header(AVFormatContext *s, AVFormatParameters *ap)
|
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}
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content[size] ='\0';
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sdp_parse(s, content);
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ff_sdp_parse(s, content);
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av_free(content);
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/* open each RTP stream */
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@ -2047,7 +1703,7 @@ AVInputFormat sdp_demuxer = {
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sizeof(RTSPState),
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sdp_probe,
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sdp_read_header,
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rtsp_fetch_packet,
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ff_rtsp_fetch_packet,
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sdp_read_close,
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};
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#endif /* CONFIG_SDP_DEMUXER */
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@ -2151,7 +1807,7 @@ AVInputFormat rtp_demuxer = {
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sizeof(RTSPState),
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rtp_probe,
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rtp_read_header,
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rtsp_fetch_packet,
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ff_rtsp_fetch_packet,
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sdp_read_close,
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.flags = AVFMT_NOFILE,
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};
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@ -468,10 +468,34 @@ void ff_rtsp_close_streams(AVFormatContext *s);
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*/
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void ff_rtsp_close_connections(AVFormatContext *rt);
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/**
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* Get the description of the stream and set up the RTSPStream child
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* objects.
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*/
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int ff_rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply);
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/**
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* Announce the stream to the server and set up the RTSPStream child
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* objects for each media stream.
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*/
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int ff_rtsp_setup_output_streams(AVFormatContext *s, const char *addr);
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/**
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* Parse a SDP description of streams by populating an RTSPState struct
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* within the AVFormatContext.
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*/
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int ff_sdp_parse(AVFormatContext *s, const char *content);
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/**
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* Receive one RTP packet from an TCP interleaved RTSP stream.
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||||
*/
|
||||
int ff_rtsp_tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
|
||||
uint8_t *buf, int buf_size);
|
||||
|
||||
/**
|
||||
* Receive one packet from the RTSPStreams set up in the AVFormatContext
|
||||
* (which should contain a RTSPState struct as priv_data).
|
||||
*/
|
||||
int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt);
|
||||
|
||||
#endif /* AVFORMAT_RTSP_H */
|
||||
|
||||
364
libavformat/rtspdec.c
Normal file
364
libavformat/rtspdec.c
Normal file
@ -0,0 +1,364 @@
|
||||
/*
|
||||
* RTSP demuxer
|
||||
* Copyright (c) 2002 Fabrice Bellard
|
||||
*
|
||||
* This file is part of FFmpeg.
|
||||
*
|
||||
* FFmpeg is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* FFmpeg is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with FFmpeg; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#include "libavutil/avstring.h"
|
||||
#include "libavutil/intreadwrite.h"
|
||||
#include "avformat.h"
|
||||
|
||||
#include "internal.h"
|
||||
#include "network.h"
|
||||
#include "os_support.h"
|
||||
#include "rtsp.h"
|
||||
#include "rdt.h"
|
||||
|
||||
//#define DEBUG
|
||||
//#define DEBUG_RTP_TCP
|
||||
|
||||
static int rtsp_read_play(AVFormatContext *s)
|
||||
{
|
||||
RTSPState *rt = s->priv_data;
|
||||
RTSPMessageHeader reply1, *reply = &reply1;
|
||||
int i;
|
||||
char cmd[1024];
|
||||
|
||||
av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
|
||||
rt->nb_byes = 0;
|
||||
|
||||
if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
|
||||
if (rt->state == RTSP_STATE_PAUSED) {
|
||||
cmd[0] = 0;
|
||||
} else {
|
||||
snprintf(cmd, sizeof(cmd),
|
||||
"Range: npt=%0.3f-\r\n",
|
||||
(double)rt->seek_timestamp / AV_TIME_BASE);
|
||||
}
|
||||
ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL);
|
||||
if (reply->status_code != RTSP_STATUS_OK) {
|
||||
return -1;
|
||||
}
|
||||
if (rt->transport == RTSP_TRANSPORT_RTP) {
|
||||
for (i = 0; i < rt->nb_rtsp_streams; i++) {
|
||||
RTSPStream *rtsp_st = rt->rtsp_streams[i];
|
||||
RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
|
||||
AVStream *st = NULL;
|
||||
if (!rtpctx)
|
||||
continue;
|
||||
if (rtsp_st->stream_index >= 0)
|
||||
st = s->streams[rtsp_st->stream_index];
|
||||
ff_rtp_reset_packet_queue(rtpctx);
|
||||
if (reply->range_start != AV_NOPTS_VALUE) {
|
||||
rtpctx->last_rtcp_ntp_time = AV_NOPTS_VALUE;
|
||||
rtpctx->first_rtcp_ntp_time = AV_NOPTS_VALUE;
|
||||
if (st)
|
||||
rtpctx->range_start_offset =
|
||||
av_rescale_q(reply->range_start, AV_TIME_BASE_Q,
|
||||
st->time_base);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
rt->state = RTSP_STATE_STREAMING;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ff_rtsp_setup_input_streams(AVFormatContext *s, RTSPMessageHeader *reply)
|
||||
{
|
||||
RTSPState *rt = s->priv_data;
|
||||
char cmd[1024];
|
||||
unsigned char *content = NULL;
|
||||
int ret;
|
||||
|
||||
/* describe the stream */
|
||||
snprintf(cmd, sizeof(cmd),
|
||||
"Accept: application/sdp\r\n");
|
||||
if (rt->server_type == RTSP_SERVER_REAL) {
|
||||
/**
|
||||
* The Require: attribute is needed for proper streaming from
|
||||
* Realmedia servers.
|
||||
*/
|
||||
av_strlcat(cmd,
|
||||
"Require: com.real.retain-entity-for-setup\r\n",
|
||||
sizeof(cmd));
|
||||
}
|
||||
ff_rtsp_send_cmd(s, "DESCRIBE", rt->control_uri, cmd, reply, &content);
|
||||
if (!content)
|
||||
return AVERROR_INVALIDDATA;
|
||||
if (reply->status_code != RTSP_STATUS_OK) {
|
||||
av_freep(&content);
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
|
||||
av_log(s, AV_LOG_VERBOSE, "SDP:\n%s\n", content);
|
||||
/* now we got the SDP description, we parse it */
|
||||
ret = ff_sdp_parse(s, (const char *)content);
|
||||
av_freep(&content);
|
||||
if (ret < 0)
|
||||
return AVERROR_INVALIDDATA;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rtsp_probe(AVProbeData *p)
|
||||
{
|
||||
if (av_strstart(p->filename, "rtsp:", NULL))
|
||||
return AVPROBE_SCORE_MAX;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rtsp_read_header(AVFormatContext *s,
|
||||
AVFormatParameters *ap)
|
||||
{
|
||||
RTSPState *rt = s->priv_data;
|
||||
int ret;
|
||||
|
||||
ret = ff_rtsp_connect(s);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
rt->real_setup_cache = av_mallocz(2 * s->nb_streams * sizeof(*rt->real_setup_cache));
|
||||
if (!rt->real_setup_cache)
|
||||
return AVERROR(ENOMEM);
|
||||
rt->real_setup = rt->real_setup_cache + s->nb_streams * sizeof(*rt->real_setup);
|
||||
|
||||
if (ap->initial_pause) {
|
||||
/* do not start immediately */
|
||||
} else {
|
||||
if (rtsp_read_play(s) < 0) {
|
||||
ff_rtsp_close_streams(s);
|
||||
ff_rtsp_close_connections(s);
|
||||
return AVERROR_INVALIDDATA;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ff_rtsp_tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
|
||||
uint8_t *buf, int buf_size)
|
||||
{
|
||||
RTSPState *rt = s->priv_data;
|
||||
int id, len, i, ret;
|
||||
RTSPStream *rtsp_st;
|
||||
|
||||
#ifdef DEBUG_RTP_TCP
|
||||
dprintf(s, "tcp_read_packet:\n");
|
||||
#endif
|
||||
redo:
|
||||
for (;;) {
|
||||
RTSPMessageHeader reply;
|
||||
|
||||
ret = ff_rtsp_read_reply(s, &reply, NULL, 1);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
if (ret == 1) /* received '$' */
|
||||
break;
|
||||
/* XXX: parse message */
|
||||
if (rt->state != RTSP_STATE_STREAMING)
|
||||
return 0;
|
||||
}
|
||||
ret = url_read_complete(rt->rtsp_hd, buf, 3);
|
||||
if (ret != 3)
|
||||
return -1;
|
||||
id = buf[0];
|
||||
len = AV_RB16(buf + 1);
|
||||
#ifdef DEBUG_RTP_TCP
|
||||
dprintf(s, "id=%d len=%d\n", id, len);
|
||||
#endif
|
||||
if (len > buf_size || len < 12)
|
||||
goto redo;
|
||||
/* get the data */
|
||||
ret = url_read_complete(rt->rtsp_hd, buf, len);
|
||||
if (ret != len)
|
||||
return -1;
|
||||
if (rt->transport == RTSP_TRANSPORT_RDT &&
|
||||
ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
|
||||
return -1;
|
||||
|
||||
/* find the matching stream */
|
||||
for (i = 0; i < rt->nb_rtsp_streams; i++) {
|
||||
rtsp_st = rt->rtsp_streams[i];
|
||||
if (id >= rtsp_st->interleaved_min &&
|
||||
id <= rtsp_st->interleaved_max)
|
||||
goto found;
|
||||
}
|
||||
goto redo;
|
||||
found:
|
||||
*prtsp_st = rtsp_st;
|
||||
return len;
|
||||
}
|
||||
static int rtsp_read_packet(AVFormatContext *s, AVPacket *pkt)
|
||||
{
|
||||
RTSPState *rt = s->priv_data;
|
||||
int ret;
|
||||
RTSPMessageHeader reply1, *reply = &reply1;
|
||||
char cmd[1024];
|
||||
|
||||
if (rt->server_type == RTSP_SERVER_REAL) {
|
||||
int i;
|
||||
|
||||
for (i = 0; i < s->nb_streams; i++)
|
||||
rt->real_setup[i] = s->streams[i]->discard;
|
||||
|
||||
if (!rt->need_subscription) {
|
||||
if (memcmp (rt->real_setup, rt->real_setup_cache,
|
||||
sizeof(enum AVDiscard) * s->nb_streams)) {
|
||||
snprintf(cmd, sizeof(cmd),
|
||||
"Unsubscribe: %s\r\n",
|
||||
rt->last_subscription);
|
||||
ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
|
||||
cmd, reply, NULL);
|
||||
if (reply->status_code != RTSP_STATUS_OK)
|
||||
return AVERROR_INVALIDDATA;
|
||||
rt->need_subscription = 1;
|
||||
}
|
||||
}
|
||||
|
||||
if (rt->need_subscription) {
|
||||
int r, rule_nr, first = 1;
|
||||
|
||||
memcpy(rt->real_setup_cache, rt->real_setup,
|
||||
sizeof(enum AVDiscard) * s->nb_streams);
|
||||
rt->last_subscription[0] = 0;
|
||||
|
||||
snprintf(cmd, sizeof(cmd),
|
||||
"Subscribe: ");
|
||||
for (i = 0; i < rt->nb_rtsp_streams; i++) {
|
||||
rule_nr = 0;
|
||||
for (r = 0; r < s->nb_streams; r++) {
|
||||
if (s->streams[r]->priv_data == rt->rtsp_streams[i]) {
|
||||
if (s->streams[r]->discard != AVDISCARD_ALL) {
|
||||
if (!first)
|
||||
av_strlcat(rt->last_subscription, ",",
|
||||
sizeof(rt->last_subscription));
|
||||
ff_rdt_subscribe_rule(
|
||||
rt->last_subscription,
|
||||
sizeof(rt->last_subscription), i, rule_nr);
|
||||
first = 0;
|
||||
}
|
||||
rule_nr++;
|
||||
}
|
||||
}
|
||||
}
|
||||
av_strlcatf(cmd, sizeof(cmd), "%s\r\n", rt->last_subscription);
|
||||
ff_rtsp_send_cmd(s, "SET_PARAMETER", rt->control_uri,
|
||||
cmd, reply, NULL);
|
||||
if (reply->status_code != RTSP_STATUS_OK)
|
||||
return AVERROR_INVALIDDATA;
|
||||
rt->need_subscription = 0;
|
||||
|
||||
if (rt->state == RTSP_STATE_STREAMING)
|
||||
rtsp_read_play (s);
|
||||
}
|
||||
}
|
||||
|
||||
ret = ff_rtsp_fetch_packet(s, pkt);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/* send dummy request to keep TCP connection alive */
|
||||
if ((av_gettime() - rt->last_cmd_time) / 1000000 >= rt->timeout / 2) {
|
||||
if (rt->server_type == RTSP_SERVER_WMS) {
|
||||
ff_rtsp_send_cmd_async(s, "GET_PARAMETER", rt->control_uri, NULL);
|
||||
} else {
|
||||
ff_rtsp_send_cmd_async(s, "OPTIONS", "*", NULL);
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* pause the stream */
|
||||
static int rtsp_read_pause(AVFormatContext *s)
|
||||
{
|
||||
RTSPState *rt = s->priv_data;
|
||||
RTSPMessageHeader reply1, *reply = &reply1;
|
||||
|
||||
if (rt->state != RTSP_STATE_STREAMING)
|
||||
return 0;
|
||||
else if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
|
||||
ff_rtsp_send_cmd(s, "PAUSE", rt->control_uri, NULL, reply, NULL);
|
||||
if (reply->status_code != RTSP_STATUS_OK) {
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
rt->state = RTSP_STATE_PAUSED;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rtsp_read_seek(AVFormatContext *s, int stream_index,
|
||||
int64_t timestamp, int flags)
|
||||
{
|
||||
RTSPState *rt = s->priv_data;
|
||||
|
||||
rt->seek_timestamp = av_rescale_q(timestamp,
|
||||
s->streams[stream_index]->time_base,
|
||||
AV_TIME_BASE_Q);
|
||||
switch(rt->state) {
|
||||
default:
|
||||
case RTSP_STATE_IDLE:
|
||||
break;
|
||||
case RTSP_STATE_STREAMING:
|
||||
if (rtsp_read_pause(s) != 0)
|
||||
return -1;
|
||||
rt->state = RTSP_STATE_SEEKING;
|
||||
if (rtsp_read_play(s) != 0)
|
||||
return -1;
|
||||
break;
|
||||
case RTSP_STATE_PAUSED:
|
||||
rt->state = RTSP_STATE_IDLE;
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rtsp_read_close(AVFormatContext *s)
|
||||
{
|
||||
RTSPState *rt = s->priv_data;
|
||||
|
||||
#if 0
|
||||
/* NOTE: it is valid to flush the buffer here */
|
||||
if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
|
||||
url_fclose(&rt->rtsp_gb);
|
||||
}
|
||||
#endif
|
||||
ff_rtsp_send_cmd_async(s, "TEARDOWN", rt->control_uri, NULL);
|
||||
|
||||
ff_rtsp_close_streams(s);
|
||||
ff_rtsp_close_connections(s);
|
||||
ff_network_close();
|
||||
rt->real_setup = NULL;
|
||||
av_freep(&rt->real_setup_cache);
|
||||
return 0;
|
||||
}
|
||||
|
||||
AVInputFormat rtsp_demuxer = {
|
||||
"rtsp",
|
||||
NULL_IF_CONFIG_SMALL("RTSP input format"),
|
||||
sizeof(RTSPState),
|
||||
rtsp_probe,
|
||||
rtsp_read_header,
|
||||
rtsp_read_packet,
|
||||
rtsp_read_close,
|
||||
rtsp_read_seek,
|
||||
.flags = AVFMT_NOFILE,
|
||||
.read_play = rtsp_read_play,
|
||||
.read_pause = rtsp_read_pause,
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user