typedef union {
int type;
XvVideoNotifyEvent xvvideo;
XvPortNotifyEvent xvport;
long pad[24];
} XvEvent;
typedef struct {
int type;
unsigned long serial;
Bool send_event;
Display *display;
XvPortID port_id;
Time time;
Atom attribute;
long value;
} XvPortNotifyEvent;
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