4 - implement return values from events in addition to the gboolean. This should be
5 done by making the event contain a GstStructure with input/output values, similar
6 to GstQuery. A typical use case is performing a non-accurate seek to a keyframe,
7 after the seek you want to get the new stream time that will actually be used to
10 - convert framerate to GstFraction in GstCaps.
12 - implement latency calculation for live sources.
14 - implement master/slave clocks.
18 - implement BUFFERSIZE.
20 - make bin_bus_handler a vmethod so subclasses can use their own implementation
21 or chain to the parent.
23 - make it possible to seek on other formats than bytes in basesrc.
25 - GstFormat quarks, get_name.
27 - GstQuery quark, get_name.
29 - GstEvent, GstMessage register like GstFormat or GstQuery.
31 - unblocking while seeking. gst_element_flush_pads (GstElement, gboolean);
33 - make GstCapsFlags instead of the #define for GST_CAPS_FLAGS_ANY.
35 - query POSITION/DURATION return accuracy. Just a flag or accuracy percentage.
41 - implement clock selection as explained in part-gstpipeline.txt.
47 - unlinking pads in the PAUSED state needs to make sure the stream thread is not
48 executing code. Can this be done with a flush to unlock all downstream chain
49 functions? Do we do this automatically or let the app handle this?
51 - when a pipeline with a live source goes to PAUSED again, a sample is prerolled
52 in the sinks. This sample should be discarded, possibly with a flush event
53 started from the source.