Finds the structure in this at index, and returns it.
WARNING: This function takes a `const GstCaps *`, but returns a non-const `GstStructure *`. This is for programming convenience -- the
caller should be aware that structures inside a constant Caps should not be modified. However,
if you know the caps are writable, either because you have just copied them or made them writable with gst_caps_make_writable
, you may modify the structure returned in the usual way, e.g. with functions like @set
.
| this |
a Caps |
| index |
the index of the structure |
|
a pointer to the Structure corresponding to |