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videoaggregator: Handle if update_caps() returns EMPTY

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Don't assume the returned caps from update_caps() is
non-empty.
This commit is contained in:
Jan Schmidt 2016-08-26 02:20:11 +10:00
parent e8a98ca5b3
commit 4f537c636a
1 changed files with 2 additions and 1 deletions
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3
gst-libs/gst/video/gstvideoaggregator.c
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@ -737,7 +737,8 @@ gst_video_aggregator_update_src_caps (GstVideoAggregator * vagg)
GST_DEBUG_OBJECT (vagg, "updating caps from %" GST_PTR_FORMAT,
downstream_caps);
GST_DEBUG_OBJECT (vagg, " with filter %" GST_PTR_FORMAT, peercaps);
if (!(caps = vagg_klass->update_caps (vagg, downstream_caps, peercaps))) {
if (!(caps = vagg_klass->update_caps (vagg, downstream_caps, peercaps)) ||
gst_caps_is_empty (caps)) {
GST_WARNING_OBJECT (vagg, "Subclass failed to update provided caps");
gst_caps_unref (downstream_caps);
if (peercaps)