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rtpbin: Fix division by zero when using ts-offset-smoothing-factor

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avg_ts_offset may cause division by zero when calculating potential
overflow protection. This fix will avoid the division.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2151>
This commit is contained in:
Robert Rosengren 2022-04-11 13:40:56 +02:00
parent ad434759a9
commit e4a6521ac7
1 changed files with 4 additions and 2 deletions
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6
subprojects/gst-plugins-good/gst/rtpmanager/gstrtpbin.c
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@ -1362,10 +1362,12 @@ stream_set_ts_offset (GstRtpBin * bin, GstRtpBinStream * stream,
* ((bin->ts_offset_smoothing_factor - 1) * stream->avg_ts_offset * ((bin->ts_offset_smoothing_factor - 1) * stream->avg_ts_offset
* + ts_offset) / bin->ts_offset_smoothing_factor * + ts_offset) / bin->ts_offset_smoothing_factor
*/ */
guint64 max_possible_smoothing_factor = guint64 max_possible_smoothing_factor = G_MAXUINT64;
G_MAXINT64 / ABS (stream->avg_ts_offset);
gint64 cur_avg_product = gint64 cur_avg_product =
(bin->ts_offset_smoothing_factor - 1) * stream->avg_ts_offset; (bin->ts_offset_smoothing_factor - 1) * stream->avg_ts_offset;
if (stream->avg_ts_offset != 0)
max_possible_smoothing_factor =
G_MAXINT64 / ABS (stream->avg_ts_offset);
if ((max_possible_smoothing_factor < bin->ts_offset_smoothing_factor) || if ((max_possible_smoothing_factor < bin->ts_offset_smoothing_factor) ||
(cur_avg_product > 0 && G_MAXINT64 - cur_avg_product < ts_offset) || (cur_avg_product > 0 && G_MAXINT64 - cur_avg_product < ts_offset) ||