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gstrtpsession: Fallback for FIR to PLI if PLI isn't available

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This commit is contained in:
Sjoerd Simons 2010-11-24 15:27:46 -05:00 committed by Wim Taymans
parent 52f95fa7ee
commit 7350d2adfa
1 changed files with 19 additions and 6 deletions
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25
gst/rtpmanager/gstrtpsession.c
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@ -1383,22 +1383,35 @@ gst_rtp_session_request_remote_key_unit (GstRtpSession * rtpsession,
gboolean fir, pli;
const GstStructure *s = gst_caps_get_structure (caps, 0);
if (all_headers &&
gst_structure_get_boolean (s, "rtcp-fb-nack-fir", &fir) && fir) {
/* 500 ms acceptable delay for FIR request is a guesstimate, it could
if (!gst_structure_get_boolean (s, "rtcp-fb-nack-fir", &fir))
fir = FALSE;
if (!gst_structure_get_boolean (s, "rtcp-fb-nack-pli", &pli))
pli = FALSE;
gst_caps_unref (caps);
if (!pli && !fir)
goto out;
/* When we need all headers, use FIR if possible falling back to PLI if
* it's available */
if (all_headers) {
/* 500 ms acceptable delay for urgent request is a guesstimate, it could
* be made configurable if needed
*/
/* If we don't have fir, fall back to pli */
rtp_session_request_key_unit (rtpsession->priv->session, ssrc, fir);
rtp_session_request_early_rtcp (rtpsession->priv->session,
gst_clock_get_time (rtpsession->priv->sysclock), 500 * GST_MSECOND);
rtp_session_request_key_unit (rtpsession->priv->session, ssrc, TRUE);
requested = TRUE;
} else if (gst_structure_get_boolean (s, "rtcp-fb-nack-pli", &pli) && pli) {
} else if (pli) {
rtp_session_request_key_unit (rtpsession->priv->session, ssrc, FALSE);
requested = TRUE;
}
gst_caps_unref (caps);
}
out:
return requested;
}