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basetransform: Allow the subclass to add new fields to caps when getting new caps from downstream

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This was already done in all other cases where new caps are handled
except upstream negotiation.
This commit is contained in:
Sebastian Dröge 2010-07-17 21:28:41 +02:00
parent a646c9b2ca
commit 29a35e70e1
1 changed files with 17 additions and 0 deletions
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17
libs/gst/base/gstbasetransform.c
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@ -1362,6 +1362,23 @@ gst_base_transform_prepare_output_buffer (GstBaseTransform * trans,
if (can_convert) {
GST_DEBUG_OBJECT (trans, "reconfigure transform for current buffer");
/* subclass might want to add fields to the caps */
if (bclass->fixate_caps != NULL) {
newcaps = gst_caps_copy (newcaps);
GST_DEBUG_OBJECT (trans, "doing fixate %" GST_PTR_FORMAT
" using caps %" GST_PTR_FORMAT
" on pad %s:%s using fixate_caps vmethod", newcaps, incaps,
GST_DEBUG_PAD_NAME (trans->srcpad));
bclass->fixate_caps (trans, GST_PAD_SINK, incaps, newcaps);
*out_buf = gst_buffer_make_metadata_writable (*out_buf);
gst_buffer_set_caps (*out_buf, newcaps);
gst_caps_unref (newcaps);
newcaps = GST_BUFFER_CAPS (*out_buf);
}
/* caps not empty, try to renegotiate to the new format */
if (!gst_base_transform_configure_caps (trans, incaps, newcaps)) {
/* not sure we need to fail hard here, we can simply continue our