using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using BitPacking;

namespace Edgy
{

    public class FloatQuantizer
    {

        public float Delta
        {
            get => this.delta;
        }

        public float MaxIntegerValue
        {
            get => this.maxIntegerValue;
        }

        public int BitsRequired
        {
            get => this.bitsRequired;
        }

        private float min;
        private float max;
        private float resolution;
        private bool checkBounds;

        private float delta;
        private int maxIntegerValue;
        private int bitsRequired;

        public FloatQuantizer(float min, float max, float resolution, bool checkBounds = false)
        {
            this.min = min;
            this.max = max;
            this.resolution = resolution;
            this.checkBounds = checkBounds;

            BitsHelper.CalculateDataForQuantizing(this.min, this.max, this.resolution, out this.delta, out this.maxIntegerValue, out this.bitsRequired);
        }

        public float DequantizeUIntValue(uint value)
        {
            return (value / this.MaxIntegerValue * this.Delta + this.min);
        }

        public void Read(IBitReaderStream bitReaderStream, out float value)
        {
            value = this.DequantizeUIntValue(bitReaderStream.ReadBits(this.BitsRequired));
        }

    }

}