typedef struct af_data_s {
} af_data_t;
typedef struct af_info_s {
	int (*open) (struct af_instance_s * vf);
} af_info_t;
typedef struct af_instance_s {
	af_data_t *(*play) (struct af_instance_s * af, af_data_t * data);
	void *setup;
} af_instance_t;
typedef struct af_volume_s {
	float mul;
	struct {
		float avg;
		int len;
	} *mem;
	float mid_s16;
} af_volnorm_t;
void method2_int16(af_volnorm_t * s, af_data_t * c)
{
	register int i = 0;
	float avg = 0.0;
	for (i = 0; i < 100; ++i)
		avg += s->mem[i].avg * (float)s->mem[i].len;
	s->mul = avg;
}
void play(struct af_instance_s *af, af_data_t * data)
{
	af_volnorm_t *s = af->setup;
	method2_int16(s, data);
}
void af_open(af_instance_t * af)
{
	af->play = play;
}

af_info_t af_info_volnorm = {
	af_open
};