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rtsp: Support receiving plain data over UDP without any RTP encapsulation

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EvoStream Media Server can serve data in this format, and
VLC/live555 already supports it.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2012-08-08 21:37:47 +03:00
parent c864e461d2
commit df8cf076c8
2 changed files with 22 additions and 4 deletions
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25
libavformat/rtsp.c
View File

@ -370,7 +370,9 @@ static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
get_word(buf1, sizeof(buf1), &p); /* port */
rtsp_st->sdp_port = atoi(buf1);
get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
get_word(buf1, sizeof(buf1), &p); /* protocol */
if (!strcmp(buf1, "udp"))
rt->transport = RTSP_TRANSPORT_RAW;
/* XXX: handle list of formats */
get_word(buf1, sizeof(buf1), &p); /* format list */
@ -563,7 +565,7 @@ void ff_rtsp_undo_setup(AVFormatContext *s)
avformat_free_context(rtpctx);
} else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
ff_rdt_parse_close(rtsp_st->transport_priv);
else if (CONFIG_RTPDEC)
else if (rt->transport == RTSP_TRANSPORT_RAW && CONFIG_RTPDEC)
ff_rtp_parse_close(rtsp_st->transport_priv);
}
rtsp_st->transport_priv = NULL;
@ -617,6 +619,8 @@ int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
rtsp_st->rtp_handle = NULL;
if (ret < 0)
return ret;
} else if (rt->transport == RTSP_TRANSPORT_RAW) {
return 0; // Don't need to open any parser here
} else if (rt->transport == RTSP_TRANSPORT_RDT && CONFIG_RTPDEC)
rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
rtsp_st->dynamic_protocol_context,
@ -629,7 +633,7 @@ int ff_rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
if (!rtsp_st->transport_priv) {
return AVERROR(ENOMEM);
} else if (rt->transport != RTSP_TRANSPORT_RDT && CONFIG_RTPDEC) {
} else if (rt->transport == RTSP_TRANSPORT_RTP && CONFIG_RTPDEC) {
if (rtsp_st->dynamic_handler) {
ff_rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
rtsp_st->dynamic_protocol_context,
@ -698,6 +702,15 @@ static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
get_word_sep(lower_transport, sizeof(lower_transport), "/;,", &p);
profile[0] = '\0';
th->transport = RTSP_TRANSPORT_RDT;
} else if (!av_strcasecmp(transport_protocol, "raw")) {
get_word_sep(profile, sizeof(profile), "/;,", &p);
lower_transport[0] = '\0';
/* raw/raw/<protocol> */
if (*p == '/') {
get_word_sep(lower_transport, sizeof(lower_transport),
";,", &p);
}
th->transport = RTSP_TRANSPORT_RAW;
}
if (!av_strcasecmp(lower_transport, "TCP"))
th->lower_transport = RTSP_LOWER_TRANSPORT_TCP;
@ -1187,6 +1200,8 @@ int ff_rtsp_make_setup_request(AVFormatContext *s, const char *host, int port,
if (rt->transport == RTSP_TRANSPORT_RDT)
trans_pref = "x-pn-tng";
else if (rt->transport == RTSP_TRANSPORT_RAW)
trans_pref = "RAW/RAW";
else
trans_pref = "RTP/AVP";
@ -1822,7 +1837,7 @@ int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
return AVERROR_EOF;
if (rt->transport == RTSP_TRANSPORT_RDT) {
ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
} else {
} else if (rt->transport == RTSP_TRANSPORT_RTP) {
ret = ff_rtp_parse_packet(rtsp_st->transport_priv, pkt, &rt->recvbuf, len);
if (ret < 0) {
/* Either bad packet, or a RTCP packet. Check if the
@ -1861,6 +1876,8 @@ int ff_rtsp_fetch_packet(AVFormatContext *s, AVPacket *pkt)
return AVERROR_EOF;
}
}
} else {
return AVERROR_INVALIDDATA;
}
end:
if (ret < 0)

1
libavformat/rtsp.h
View File

@ -52,6 +52,7 @@ enum RTSPLowerTransport {
enum RTSPTransport {
RTSP_TRANSPORT_RTP, /**< Standards-compliant RTP */
RTSP_TRANSPORT_RDT, /**< Realmedia Data Transport */
RTSP_TRANSPORT_RAW, /**< Raw data (over UDP) */
RTSP_TRANSPORT_NB
};