[gst-devel] Caps and properties

[Richard Boulton]

I've just been wondering: is there any way to specify a "preferred" value
foe a property?  For example, if I have:

static GstPadFactory sink_factory = {
  "sink",
  GST_PAD_FACTORY_SINK,
  GST_PAD_FACTORY_ALWAYS,
  GST_PAD_FACTORY_CAPS(
     "esdsink_sink",
     "audio/raw",
     "format",   GST_PROPS_INT (1),
     "depth",    GST_PROPS_LIST (GST_PROPS_INT (8), GST_PROPS_INT (16)),
     "rate",     GST_PROPS_INT_RANGE (8000, 48000),
     "channels", GST_PROPS_LIST (GST_PROPS_INT (1), GST_PROPS_INT (2)),
     "", GST_PROPS_BOOLEAN (TRUE)
  ),
  NULL
};

this specifies that I am happy with any value of rate in the range 8000 to
48000.  (Actually I believe that esd will do its best to cope with things
well outside this range, but thats beside the point).

Is there any way to specify a "preferred" value of a property.  For
example, an entire pipeline might be happy with 8000 <= rate <= 48000: who
decides what actual value to use?


Also, while I'm asking questions:  Is "GST_IS_BUFFER" something which has
been deprecated, or just not yet implemented?  It's in quite a few of the
plugins, commented out, and in the example plugin too (not commented out).

-- 
Richard