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basetransform: clarify _caps_is_equal()

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This commit is contained in:
Wim Taymans 2009-08-05 18:02:31 +02:00
parent ec4d259b67
commit a2a973eafd
1 changed files with 4 additions and 0 deletions
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4
libs/gst/base/gstbasetransform.c
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@ -1395,6 +1395,10 @@ gst_base_transform_prepare_output_buffer (GstBaseTransform * trans,
/* check if we need to make things writable. We need this when we need to
* update the caps or the metadata on the output buffer. */
newcaps = GST_BUFFER_CAPS (*out_buf);
/* we check the pointers as a quick check and then go to the more involved
* check. This is needed when we receive different pointers on the sinkpad
* that mean the same caps. What we then want to do is prefer those caps over
* the ones on the srcpad and set the srcpad caps to the buffer caps */
setcaps = (newcaps != outcaps) && (!gst_caps_is_equal (newcaps, outcaps));
/* we need to modify the metadata when the element is not gap aware,
* passthrough is not used and the gap flag is set */