Xvlib.h:

typedef struct {
  int flags;	/* XvGettable, XvSettable */
  int min_value;

  int default_value; /* <--- How about adding default value? */

  int max_value;
  char *name;
} XvAttribute;

How about adding default_value parameter to Xv attributes which refers to
hardware default value of given Xv attribute? Many apps that have button "Reset
to defaults" could make use of default_value instead of assuming that default
value is in the middle of scale (which is not always true, like in HUE parameter
in nvidia driver).

greetings,
Zbigniew 'zbiggy' Luszpinski