static void dest_size_cb(void *, int, int, double, int *, int *, double *);
static void frame_output_cb(void *, int, int, double, int *, int *, int *, int *, double *, int *, int *);
static void dest_size_cb(void *, int, int, double, int *, int *, double *);
static void frame_output_cb(void *, int, int, double, int *, int *, int *, int *, double *, int *, int *);