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discoverer: Try to get negotiated caps first on pad-added and only then fall back to a caps query

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The negotiated caps will be more accurate and are fixed caps in any
case.

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/498

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/655>
This commit is contained in:
Sebastian Dröge 2020-05-06 11:42:05 +03:00
parent add3023f09
commit 350a7197e7
1 changed files with 6 additions and 1 deletions
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7
gst-libs/gst/pbutils/gstdiscoverer.c
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@ -701,7 +701,12 @@ uridecodebin_pad_added_cb (GstElement * uridecodebin, GstPad * pad,
g_object_set (ps->sink, "silent", TRUE, NULL);
g_object_set (ps->queue, "max-size-buffers", 1, "silent", TRUE, NULL);
caps = gst_pad_query_caps (pad, NULL);
caps = gst_pad_get_current_caps (pad);
if (!caps) {
GST_WARNING ("Couldn't get negotiated caps from %s:%s",
GST_DEBUG_PAD_NAME (pad));
caps = gst_pad_query_caps (pad, NULL);
}
sinkpad = gst_element_get_static_pad (ps->queue, "sink");
if (sinkpad == NULL)