[SCM] libav/experimental: rtsp: Parse RTP-Info headers
siretart at users.alioth.debian.org
siretart at users.alioth.debian.org
Sun Jun 30 17:21:26 UTC 2013
The following commit has been merged in the experimental branch:
commit 29db7c3af4b90f035c175e94df14bc931cfd13a3
Author: Martin Storsjö <martin at martin.st>
Date: Wed Jan 5 21:23:42 2011 +0000
rtsp: Parse RTP-Info headers
Originally committed as revision 26236 to svn://svn.ffmpeg.org/ffmpeg/trunk
diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index 431703e..a38cc42 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -684,6 +684,61 @@ static void rtsp_parse_transport(RTSPMessageHeader *reply, const char *p)
}
}
+static void handle_rtp_info(RTSPState *rt, const char *url,
+ uint32_t seq, uint32_t rtptime)
+{
+ int i;
+ if (!rtptime || !url[0])
+ return;
+ if (rt->transport != RTSP_TRANSPORT_RTP)
+ return;
+ for (i = 0; i < rt->nb_rtsp_streams; i++) {
+ RTSPStream *rtsp_st = rt->rtsp_streams[i];
+ RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
+ if (!rtpctx)
+ continue;
+ if (!strcmp(rtsp_st->control_url, url)) {
+ rtpctx->base_timestamp = rtptime;
+ break;
+ }
+ }
+}
+
+static void rtsp_parse_rtp_info(RTSPState *rt, const char *p)
+{
+ int read = 0;
+ char key[20], value[1024], url[1024] = "";
+ uint32_t seq = 0, rtptime = 0;
+
+ for (;;) {
+ p += strspn(p, SPACE_CHARS);
+ if (!*p)
+ break;
+ get_word_sep(key, sizeof(key), "=", &p);
+ if (*p != '=')
+ break;
+ p++;
+ get_word_sep(value, sizeof(value), ";, ", &p);
+ read++;
+ if (!strcmp(key, "url"))
+ av_strlcpy(url, value, sizeof(url));
+ else if (!strcmp(key, "seq"))
+ seq = strtol(value, NULL, 10);
+ else if (!strcmp(key, "rtptime"))
+ rtptime = strtol(value, NULL, 10);
+ if (*p == ',') {
+ handle_rtp_info(rt, url, seq, rtptime);
+ url[0] = '\0';
+ seq = rtptime = 0;
+ read = 0;
+ }
+ if (*p)
+ p++;
+ }
+ if (read > 0)
+ handle_rtp_info(rt, url, seq, rtptime);
+}
+
void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
RTSPState *rt, const char *method)
{
@@ -728,6 +783,10 @@ void ff_rtsp_parse_line(RTSPMessageHeader *reply, const char *buf,
p += strspn(p, SPACE_CHARS);
if (method && !strcmp(method, "DESCRIBE"))
av_strlcpy(rt->control_uri, p , sizeof(rt->control_uri));
+ } else if (av_stristart(p, "RTP-Info:", &p) && rt) {
+ p += strspn(p, SPACE_CHARS);
+ if (method && !strcmp(method, "PLAY"))
+ rtsp_parse_rtp_info(rt, p);
}
}
--
Libav/FFmpeg packaging
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