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rtpmp4gdepay: handle broken AU-Index in non-interleaved streams

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In case of non-interleaved (= sequentially payloaded) streams,
the AU-Index serves little purpose (that is not already covered by
RTP fields).  (Broken) Payloaders might consider this field then
to be disregarded and have non spec compliant values, e.g. each
RTP packet having AU-Index 2 (rather than 0).  As such, ensure/force
simple sequential sending of non-interleaved streams.
This commit is contained in:
Mark Nauwelaerts 2009-08-27 15:46:15 +02:00
parent 15fa7d33ed
commit 30efa405f3
2 changed files with 19 additions and 0 deletions
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18
gst/rtp/gstrtpmp4gdepay.c
View file

@ -276,6 +276,8 @@ gst_rtp_mp4g_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
gst_rtp_mp4g_depay_parse_int (structure, "constantsize", 0);
rtpmp4gdepay->constantDuration =
gst_rtp_mp4g_depay_parse_int (structure, "constantduration", 0);
rtpmp4gdepay->maxDisplacement =
gst_rtp_mp4g_depay_parse_int (structure, "maxdisplacement", 0);
/* get config string */
@ -547,6 +549,22 @@ gst_rtp_mp4g_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
/* a new interleave group started, flush */
gst_rtp_mp4g_depay_flush_queue (rtpmp4gdepay);
}
if (G_UNLIKELY (!rtpmp4gdepay->maxDisplacement &&
rtpmp4gdepay->max_AU_index != -1
&& rtpmp4gdepay->max_AU_index >= AU_index)) {
GstBuffer *outbuf;
/* some broken non-interleaved streams have AU-index jumping around
* all over the place, apparently assuming receiver disregards */
GST_DEBUG_OBJECT (rtpmp4gdepay, "non-interleaved broken AU indices;"
" forcing continuous flush");
/* reset AU to avoid repeated DISCONT in such case */
outbuf = g_queue_peek_head (rtpmp4gdepay->packets);
if (G_LIKELY (outbuf)) {
rtpmp4gdepay->next_AU_index = GST_BUFFER_OFFSET (outbuf);
gst_rtp_mp4g_depay_flush_queue (rtpmp4gdepay);
}
}
rtpmp4gdepay->prev_rtptime = rtptime;
} else {
AU_index_delta =

1
gst/rtp/gstrtpmp4gdepay.h
View file

@ -49,6 +49,7 @@ struct _GstRtpMP4GDepay
gint constantSize;
gint constantDuration;
gint maxDisplacement;
gint sizelength;
gint indexlength;