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| Buffers should have readlocks and writelocks to enforce |
| GST_BUFFER_DONTKEEP and relax the restriction that buffers with |
| multiple refcounts are read-only. |
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| Example: |
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| videotestsrc ! ximagesink |
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| videotestsrc requests a buffer from its src pad |
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| ximagesink creates a buffer (refcount:1 readlock:0 writelock:0) |
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| videotestsrc writelocks it (refcount:1 readlock:0 writelock:1) |
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| videotestsrc writes to the buffer |
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| videotestsrc un-writelocks it (refcount:1 readlock:0 writelock:0) |
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| ximagesink readlocks it (refcount:1 readlock:1 writelock:0) |
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| ximagesink writes it to the screen |
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| ximagesink un-readlocks it (refcount:1 readlock:0 writelock:0) |
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