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h264parse: decrease passthrough negotiation preference

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Also ensure parsing fixed caps when negotiating rather than failing to
handle non-fixed list cases.

See #668471.
This commit is contained in:
Mark Nauwelaerts 2012-02-03 11:26:53 +01:00
parent f8f4620451
commit c36bb8b73d
1 changed files with 16 additions and 0 deletions
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16
gst/videoparsers/gsth264parse.c
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@ -293,6 +293,9 @@ gst_h264_parse_get_string (GstH264Parse * parse, gboolean format, gint code)
static void
gst_h264_parse_format_from_caps (GstCaps * caps, guint * format, guint * align)
{
g_return_if_fail (gst_caps_is_fixed (caps));
GST_DEBUG ("parsing caps: %" GST_PTR_FORMAT, caps);
if (format)
*format = GST_H264_PARSE_FORMAT_NONE;
@ -332,9 +335,20 @@ gst_h264_parse_negotiate (GstH264Parse * h264parse, GstCaps * in_caps)
guint format = GST_H264_PARSE_FORMAT_NONE;
guint align = GST_H264_PARSE_ALIGN_NONE;
g_return_if_fail ((in_caps == NULL) || gst_caps_is_fixed (in_caps));
caps = gst_pad_get_allowed_caps (GST_BASE_PARSE_SRC_PAD (h264parse));
GST_DEBUG_OBJECT (h264parse, "allowed caps: %" GST_PTR_FORMAT, caps);
/* concentrate on leading structure, since decodebin2 parser
* capsfilter always includes parser template caps */
if (caps) {
caps = gst_caps_make_writable (caps);
gst_caps_truncate (caps);
GST_DEBUG_OBJECT (h264parse, "negotiating with caps: %" GST_PTR_FORMAT,
caps);
}
if (in_caps && caps) {
if (gst_caps_can_intersect (in_caps, caps)) {
GST_DEBUG_OBJECT (h264parse, "downstream accepts upstream caps");
@ -345,6 +359,8 @@ gst_h264_parse_negotiate (GstH264Parse * h264parse, GstCaps * in_caps)
}
if (caps) {
/* fixate to avoid ambiguity with lists when parsing */
gst_pad_fixate_caps (GST_BASE_PARSE_SRC_PAD (h264parse), caps);
gst_h264_parse_format_from_caps (caps, &format, &align);
gst_caps_unref (caps);
}