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aacparse: Implement ::get_sink_caps vfunc to propagate downstream caps constraints upstream

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This commit is contained in:
Sebastian Dröge 2011-11-24 09:43:14 +01:00
parent 38c9fefa01
commit 94daabf71f
1 changed files with 35 additions and 0 deletions
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35
gst/audioparsers/gstaacparse.c
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@ -74,6 +74,7 @@ gboolean gst_aac_parse_stop (GstBaseParse * parse);
static gboolean gst_aac_parse_sink_setcaps (GstBaseParse * parse,
GstCaps * caps);
static GstCaps *gst_aac_parse_sink_getcaps (GstBaseParse * parse);
gboolean gst_aac_parse_check_valid_frame (GstBaseParse * parse,
GstBaseParseFrame * frame, guint * size, gint * skipsize);
@ -144,6 +145,7 @@ gst_aac_parse_class_init (GstAacParseClass * klass)
parse_class->start = GST_DEBUG_FUNCPTR (gst_aac_parse_start);
parse_class->stop = GST_DEBUG_FUNCPTR (gst_aac_parse_stop);
parse_class->set_sink_caps = GST_DEBUG_FUNCPTR (gst_aac_parse_sink_setcaps);
parse_class->get_sink_caps = GST_DEBUG_FUNCPTR (gst_aac_parse_sink_getcaps);
parse_class->parse_frame = GST_DEBUG_FUNCPTR (gst_aac_parse_parse_frame);
parse_class->check_valid_frame =
GST_DEBUG_FUNCPTR (gst_aac_parse_check_valid_frame);
@ -723,3 +725,36 @@ gst_aac_parse_stop (GstBaseParse * parse)
GST_DEBUG ("stop");
return TRUE;
}
static GstCaps *
gst_aac_parse_sink_getcaps (GstBaseParse * parse)
{
GstCaps *peercaps;
GstCaps *res;
peercaps = gst_pad_get_allowed_caps (GST_BASE_PARSE_SRC_PAD (parse));
if (peercaps) {
guint i, n;
/* Remove the framed field */
peercaps = gst_caps_make_writable (peercaps);
n = gst_caps_get_size (peercaps);
for (i = 0; i < n; i++) {
GstStructure *s = gst_caps_get_structure (peercaps, i);
gst_structure_remove_field (s, "framed");
}
res =
gst_caps_intersect_full (peercaps,
gst_pad_get_pad_template_caps (GST_BASE_PARSE_SRC_PAD (parse)),
GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (peercaps);
} else {
res =
gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_PARSE_SRC_PAD
(parse)));
}
return res;
}