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ac3parse: custom get_sink_caps handling for private stream caps

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... now that those are transformed rather than parsed, some transforming
of caps is required as well to make auto-plugging succeed.
This commit is contained in:
Mark Nauwelaerts 2014-01-27 20:05:42 +01:00
parent a46f667853
commit d25a183ccc
1 changed files with 41 additions and 0 deletions
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41
gst/audioparsers/gstac3parse.c
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@ -846,6 +846,43 @@ remove_fields (GstCaps * caps)
}
}
static GstCaps *
extend_caps (GstCaps * caps, gboolean add_private)
{
guint i, n;
GstCaps *ncaps = gst_caps_new_empty ();
n = gst_caps_get_size (caps);
for (i = 0; i < n; i++) {
GstStructure *s = gst_caps_get_structure (caps, i);
if (add_private && !gst_structure_has_name (s, "audio/x-private1-ac3")) {
GstStructure *ns = gst_structure_copy (s);
gst_structure_set_name (ns, "audio/x-private1-ac3");
gst_caps_append_structure (ncaps, ns);
} else if (!add_private &&
gst_structure_has_name (s, "audio/x-private1-ac3")) {
GstStructure *ns = gst_structure_copy (s);
gst_structure_set_name (ns, "audio/x-ac3");
gst_caps_append_structure (ncaps, ns);
ns = gst_structure_copy (s);
gst_structure_set_name (ns, "audio/x-eac3");
gst_caps_append_structure (ncaps, ns);
} else if (!add_private) {
gst_caps_append_structure (ncaps, gst_structure_copy (s));
}
}
if (add_private) {
gst_caps_append (caps, ncaps);
} else {
gst_caps_unref (caps);
caps = ncaps;
}
return caps;
}
static GstCaps *
gst_ac3_parse_get_sink_caps (GstBaseParse * parse, GstCaps * filter)
{
@ -857,6 +894,8 @@ gst_ac3_parse_get_sink_caps (GstBaseParse * parse, GstCaps * filter)
GstCaps *fcopy = gst_caps_copy (filter);
/* Remove the fields we convert */
remove_fields (fcopy);
/* we do not ask downstream to handle x-private1-ac3 */
fcopy = extend_caps (fcopy, FALSE);
peercaps = gst_pad_peer_query_caps (GST_BASE_PARSE_SRC_PAD (parse), fcopy);
gst_caps_unref (fcopy);
} else
@ -867,6 +906,8 @@ gst_ac3_parse_get_sink_caps (GstBaseParse * parse, GstCaps * filter)
* between different alignments. */
peercaps = gst_caps_make_writable (peercaps);
remove_fields (peercaps);
/* also allow for x-private1-ac3 input */
peercaps = extend_caps (peercaps, TRUE);
res = gst_caps_intersect_full (peercaps, templ, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);